If I use the xbox 360 controller profile, I cannot use the right trigger to shoot or melee. My friend has the same problem. It never changes no matter which drivers i use. So I must use Xpadder or another profiling software to make the right trigger emulate a mouse left-click.
If I make my own profile via days, it's impossible to make everything work right because assignments does not pick up on threshold and dead zone, so i can only walk fast or only walk slow. I can turn a hard right, or i can barely turn right. but never both on one profile.
These issues are important for a big part of the dayz community. About 50% of everyone I know has always played dayz, and arma with a gamepad for combat and walking around.