Yeah, I do recognize that a few games support it, and that if you allow remapping broad enough there are other ways to provide the functionality. But it feels so damn natural I'd consider the game unplayable with it.

Overall I agree with you on the game, too. I'll probably try again at some point, but I don't really find the world or enemies satisfying. And while handling the guns is awesome, the actual gunplay wasn't. The strongest point was definitely the use of the controller, which should enhance a game, not carry it.