Yes, there are some photos earlier in the thread comparing the gen cases to the AliX ones. They're nice cases for the price, but are a bit thicker/bigger than the 26mm gen cases...they might be intended to rep the 28mm cases, I'm not sure.
The bezels do snap off, if you push them out from behind. They seem to be a friction fit and have a rubber o-ring to seal the case. The case backs are a direct fit to the 26mm cases, however, which is a nice option if you source a 26mm case and don't have a back.
I'm going to build up one of the AliX cases in the next couple days and post some side by side photos for comparison can