I have all three..Infinity grip, classic aero seats and the bent stick.
I had to cut off some of the stick to get the grip to clear the panel, but it clears ok with about 1/8". It's never a problem since you won't be trimming with the stick that far forward....at least I hope not! The seats are not an issue since they don't really overlap the metal seat pan by much, anyway. If you pull the stick full back, it does touch the seat, but it has never been an issue in flight. The rear stick will need to be cut down to clear the back of the Classic Aero front seat, though, especially if you put an Infinity grip in the back. I think Woody offers a bent rear stick now that might help.