Late to the party :chug:
My two bits so far, in order of compatibility:
1. !00-400L Mark II - no issues but slow focus above 300. Between 100 and 200 it is very quick. Phase works better than Contrast. I did not notice a difference between 'full' range and 3m-infinity. However, the A7RII will not be replacing my Canon bodies on this one.
2. 70-200 F4 IS - Strange problem the lens will sometimes lock up and turning the camera off and on makes no difference, there is no image. Have to remove the battery to undo it. Focus works fine, throughout the range, quick enough for regular use.
3. 24-70 f2.8 - Works great, no problems
4. 16-35 f4 - Works great, even at 3 ft away. Would be useful if I just had to take one wide angle lens with me for both Canon and Sony systems.
5. 400 DO MkII - just got it today. Much surprised to see it works almost flawlessly! Will try to do some action shots with birds in the area this weekend. Awesome lens to begin with and works well with the Sony
Sorry, forgot to mention, using Metabones MkIV adapter.