Long time later but here goes.
Initially I was very disappointed with the Ronin-S, it didn't interface with the 1DX MkII at all, you couldn't even trigger start stop for video from the gimbal but had to touch the camera, also one of my main reasons for getting it was panning time lapses, and I never worked out how to coordinate movement pauses with third party shutter releases over the length of the shots, and I wanted to give the panorama mode a trial, all to no avail just a vague promise of 'we are working on a firmware upgrade'.
Well the software has been updated and the firmware installed and I have to say the Ronin S is now the tool I'd hoped it would be. All the features I was interested in now work, though I haven't tried the gimbal focus control yet, and they seem to work well. Panning time lapses, however complicated the motion, are easily programmed in and effected and the panorama feature makes the cost of multi row pano heads seem like a bad joke.
I have seen comparative footage from the DJI and Zhiyun and believe the Ronin is the better stabilizer, it appears smoother and has a much more solid horizon hold in that it doesn't drift during a movement.
All in all an excellent accessory and with $200 off at the moment ($749-$549) via DJI and B&H I can't recommend it highly enough.