It would be nice if the extra money spent for a clutch atually worked like a real clutch. Since the G25 was really designed for the PC and not the PS3 the clutch feature does not fully simulate a working clutch. You can't really pop the clutch as you would with the handbrake feature to break the tires lose if you wanted to power slide plus you lose the on the fly adjustment for the brake bias, traction & torque split control which I think is an important key for the GT5p game.
I am hoping they will make it work better when they come out with the new wheel model plus maybe a real handbrake feature. Hey, maybe thats why GT5 is just waiting to release it anytime, they are waiting on Logitech to release the new wheel with GT5 as a bundle too...lol wishful thinking haha!