We received ours yesterday, and I'm very impressed.
Front command wheel access is excellent, but the rear command wheel is just a stretch for me. I don't have big hands. The combo lever for AF-ON and AE-L/AF-L is a great idea. AF-ON is very comfortable for me, but AE-L is a little bit of an un-natural angle. Having access to both controls without digging around in the menu is important to me (I shoot pelagics in aperture priority these days). I believe that neither Subal or Aquatica will allow access to both functions on the same dive.
I love the playback button being angled out, making it a comfortable reach for my left thumb that I can find without looking on the d300.
I love Subal housings, but in some ways this housing is better designed.
-the MSC switch isn't as fussy
-access to BOTH AE-L/AF-L & AF-ON
-angled playback, delete, menu, zoom, lock, and ok controls
Subal's rear command wheel access is better, and the front command wheel has a little better gearing for my taste. The shutter release is crisper, and they'll have a lens release (my pinky finger barely fits past the 105VR w/ an Athena focus gear on it to get the lens off, but I complain every time I have to do it). Subal also has that lovely viewfinder.