The middle lens with the square shape looks much more compact than the silver round design. We should try a variation with black screws to make it look even more "embedded" into the black metal piece.
"I am not convinced we need this grip bevel element here."
I'm not either. It looks interesting and I've tried to think of when it would come into play and the only thing I can imagine is when you're holding the camera down by your side whilst chatting, and even then it would probably feel risky holding it like that.