If it's a game where each weapon has it's own binding (1, 2, 3, 4 etc) I'll usually set up a touch menu on the left pad. Or just a d-pad config on the left pad if there's only 3 or 4 weapon slots. OR use one/both bumpers to cycle through weapons one by one. Otherwise I guess I sorta just deal with it? Only game offhand I can think of I've used a weapon wheel with the controller is GTAV and it wasn't TOO bad, though definitely slower than using a real analog stick to make the selection.