From what I can gather, it appears the RaspiHQ camera is perfectly usable within Ekos, as long as the correct setup order is done (Gain before exposure if I've read the thread correctly?). I've yet to test this in anger, but I appear to be getting some output during the day which is promising.
What I can't get to work though, is live video or video recording. The live video button below the sequence order window has a cross-through it?! Is this supported yet, or have I missed something on setup?
(Video seems to work fine via comman line and raspivid