No difference, I would also be surprised if it did make a difference - it's the cable I've always used.
I stated it didn't matter whether the camera was in PTP or MSC mode, there is actually a slight difference, it does get a little further in MSC mode.:
[2020-08-22T17:11:05.234 CEST INFO ][ org.kde.kstars.ekos] - "Starting INDI services..."
[2020-08-22T17:11:05.234 CEST DEBG ][ org.kde.kstars.indi] - INDI: Starting local drivers...
[2020-08-22T17:11:05.234 CEST DEBG ][ org.kde.kstars.indi] - Starting INDI Server: ("-v", "-p", "7624", "-m", "300", "-r", "0", "-f", "/tmp/indififo71f748cf") -f "/tmp/indififo71f748cf"
[2020-08-22T17:11:05.237 CEST DEBG ][ org.kde.kstars.indi] - INDI Server Started? true
[2020-08-22T17:11:05.237 CEST DEBG ][ org.kde.kstars.indi] - INDI: INDI Server started locally on port 7624
[2020-08-22T17:11:05.237 CEST DEBG ][ org.kde.kstars.indi] - Starting INDI Driver "indi_pentax"
[2020-08-22T17:11:05.237 CEST DEBG ][ org.kde.kstars.indi] - Adding managed driver "Pentax DSLR"
[2020-08-22T17:11:05.237 CEST DEBG ][ org.kde.kstars.indi] - INDIListener: Adding a new client manager to INDI listener..
[2020-08-22T17:11:05.237 CEST DEBG ][ org.kde.kstars.indi] - INDI: Connecting to local INDI server on port 7624 ...
[2020-08-22T17:11:05.238 CEST DEBG ][ org.kde.kstars.indi] - INDI server connected.
[2020-08-22T17:11:05.238 CEST DEBG ][ org.kde.kstars.indi] - Connection to INDI server is successful
[2020-08-22T17:11:05.238 CEST INFO ][ org.kde.kstars.ekos] - "INDI services started on port 7624."
[2020-08-22T17:11:05.240 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:05: startup: /usr/bin/indiserver -v -p 7624 -m 300 -r 0 -f /tmp/indififo71f748cf "
[2020-08-22T17:11:05.240 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:05: listening to port 7624 on fd 3"
[2020-08-22T17:11:05.240 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "FIFO: start indi_pentax"
[2020-08-22T17:11:05.240 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "FIFO: Starting driver indi_pentax"
[2020-08-22T17:11:05.240 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:05: Driver indi_pentax: pid=1976 rfd=4 wfd=7 efd=8"
[2020-08-22T17:11:05.240 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:05: Client 5: new arrival from 127.0.0.1:43342 - welcome!"
[2020-08-22T17:11:05.240 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-08-22T17:11:05.251 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:05: Driver indi_pentax: Looking for Pentax camera in PTP mode."
[2020-08-22T17:11:05.251 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:05: Driver indi_pentax: Looking for Pentax camera in MSC mode."
[2020-08-22T17:11:05.251 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-08-22T17:11:06.908 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:06: Driver indi_pentax: The Pentax camera driver for MSC mode uses PkTriggerCord, courtesy of Andras Salamon. See pktriggercord.melda.info "
[2020-08-22T17:11:06.908 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-08-22T17:11:07.203 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on Telescope Simulator.EQUATORIAL_EOD_COORD"
[2020-08-22T17:11:07.203 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on Telescope Simulator.TELESCOPE_INFO"
[2020-08-22T17:11:07.203 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on Telescope Simulator.GEOGRAPHIC_COORD"
[2020-08-22T17:11:07.203 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on Telescope Simulator.TELESCOPE_PIER_SIDE"
[2020-08-22T17:11:07.203 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on Rotator Simulator.ABS_ROTATOR_ANGLE"
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on Focuser Simulator.ABS_FOCUS_POSITION"
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - Received new device PENTAX K-70 (MSC)
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on Focuser Simulator.FOCUS_TEMPERATURE"
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on CCD Simulator.FILTER_SLOT"
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on CCD Simulator.FILTER_NAME"
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: snooping on SQM.SKY_QUALITY"
[2020-08-22T17:11:07.204 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-08-22T17:11:07.211 CEST DEBG ][ org.kde.kstars.indi] - INDIListener: New device PENTAX K-70 (MSC)
[2020-08-22T17:11:07.211 CEST INFO ][ org.kde.kstars.ekos] - Ekos received a new device: "PENTAX K-70 (MSC)"
[2020-08-22T17:11:07.212 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < CONNECTION >
[2020-08-22T17:11:07.213 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < DRIVER_INFO >
[2020-08-22T17:11:07.214 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < POLLING_PERIOD >
[2020-08-22T17:11:07.214 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < DEVICE_INFO >
[2020-08-22T17:11:07.215 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < CONFIG_PROCESS >
[2020-08-22T17:11:07.215 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < DEBUG >
[2020-08-22T17:11:07.216 CEST INFO ][ org.kde.kstars.indi] - PENTAX K-70 (MSC) : "[INFO] Debug is enabled. "
[2020-08-22T17:11:07.217 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < DEBUG_LEVEL >
[2020-08-22T17:11:07.218 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < LOGGING_LEVEL >
[2020-08-22T17:11:07.218 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < LOG_OUTPUT >
[2020-08-22T17:11:07.218 CEST DEBG ][ org.kde.kstars.indi] - PENTAX K-70 (MSC) : "[DEBUG] Toggle Debug Level -- Driver Debug "
[2020-08-22T17:11:07.218 CEST DEBG ][ org.kde.kstars.indi] - PENTAX K-70 (MSC) : "[DEBUG] Toggle Logging Level -- Messages "
[2020-08-22T17:11:07.218 CEST DEBG ][ org.kde.kstars.indi] - < PENTAX K-70 (MSC) >: < ACTIVE_DEVICES >
[2020-08-22T17:11:07.261 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: ioctl: Operation not permitted"
[2020-08-22T17:11:07.261 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: /build/libpktriggercord-lho8Pj/libpktriggercord-0.85.01~202008211631~ubuntu18.04.1/libpktriggercord/src/pslr.c:1703:scsi_write(fd, cmd, sizeof (cmd), 0, 0) failed: 1"
[2020-08-22T17:11:07.261 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: /build/libpktriggercord-lho8Pj/libpktriggercord-0.85.01~202008211631~ubuntu18.04.1/libpktriggercord/src/pslr.c:1469:command(p->fd, 0, 4, 0) failed: 1"
[2020-08-22T17:11:07.261 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-08-22T17:11:07.335 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: stderr EOF"
[2020-08-22T17:11:07.335 CEST DEBG ][ org.kde.kstars.indi] - Removing device "PENTAX K-70 (MSC)"
[2020-08-22T17:11:07.335 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "<delProperty device=\"PENTAX K-70 (MSC)\"/>"
[2020-08-22T17:11:07.335 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "Child process 1976 died"
[2020-08-22T17:11:07.335 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-08-22T15:11:07: Driver indi_pentax: Terminated after #0 restarts."
[2020-08-22T17:11:07.335 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-08-22T17:11:07.335 CEST CRIT ][ org.kde.kstars.indi] - INDI driver "indi_pentax" crashed!
[2020-08-22T17:11:07.338 CEST DEBG ][ org.kde.kstars.indi] - INDIListener: Removing device "PENTAX K-70 (MSC)"
[2020-08-22T17:11:07.338 CEST INFO ][ org.kde.kstars.ekos] - "PENTAX K-70 (MSC) er offline."
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.indi] - INDI: Stopping local drivers...
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.indi] - Removing managed driver "Pentax DSLR"
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.indi] - INDIListener: Removing client manager for server localhost @ 7624
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.indi] - INDI server disconnected. Exit code: 0
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.indi] - INDI server disconnected. Exit code: 0
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.indi] - Stopping INDI Driver "indi_pentax"
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.indi] - Stopping INDI Server "localhost" @ "7624"
[2020-08-22T17:11:07.339 CEST DEBG ][ org.kde.kstars.ekos] - Resetting Ekos Manager...
[2020-08-22T17:11:07.340 CEST WARN ][ default] - QSqlDatabasePrivate::removeDatabase: connection 'filter_db' is still in use, all queries will cease to work.
[2020-08-22T17:11:07.340 CEST WARN ][ default] - QSqlDatabasePrivate::addDatabase: duplicate connection name 'filter_db', old connection removed.
[2020-08-22T17:11:07.341 CEST INFO ][ org.kde.kstars.ekos] - "INDI-tjenester stoppet."
[2020-08-22T17:11:12.243 CEST DEBG ][ org.kde.kstars.ekos] - Resetting Ekos Manager...

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