I do like how games make a quick-swap an easy maneuver, instead of paging through an entire arsenal, but beyond that, it's a terrible TERRIBLE idea. The thing is, 2-weapons really aren't much of a problem by themselves, but games are then designed with that limit in mind. You never get to the point of worrying about running out of ammo because there are never enough enemies to kill. You never are challenged with enemy diversity because the devs don't know what guns to expect you to be holding. Everything starts to become the same after a while.
