Ergonomics is a personal thing. When I use a non-gripped camera, my hand is sore by the end of the day. I think mainly my 5th digit being curled under and even more the lack of weight to counterbalance a heavier lens – even the 24-105/4L feels unbalanced on my R, and the other day I was shooting with the (adapted) 11-24/4L and that was a whole other level of front-heavy.
I used a gripped 7D and 5DII, which were ok but the integrated grip has a different shape that I find much more comfortable (the add-on grips bulge on both sides to accommodate transverse batteries, the 1-series only bulges in front). I also found the flex between grip and body to be problematic on a tripod, but removing and replacing the grip is a PITA.
Not at all sure how I’d feel about something like this patent design. Bulk isn’t a big deal (my camera bags are sized for pro bodies), but not sure about all-day comfort, and too much weight savings would be bad for me (as above, it’s more about balance than total mass).