Admittedly I don't have huge hands, but the ergonomics make absolutely no sense to me. When I am gripping the camera, my thumb and forefinger can barely touch the shutter dial, let alone turn it. I would have to hold the camera in my left hand, release the grip, and turn the dial. To me the point of the fat grip is that you can keep gripping it, for extended periods if need be, and have relative freedom of your left hand, while still controlling the camera. I suppose there is a reason most fat dslrs are controlled by thumb buttons and scroll wheels.
