I have one in .45 so I can't comment on the 9mm model. But I went for it for the same reason as you ... capacity.

I find it comfortable enough to carry, but it's not tiny for sure. Very comfortable in the hand and the 'grip-zone' on the grip surfaces is helpful with recoil. I find my .45 to be a little bit snappy but controllable. I imagine the 9mm is quite comfortable and controllable.