I'm hearing a lot about Elite Armour "Sets", but what I want to know is: Can we, at the very least, mix and match pieces from various sets we've unlocked in Reach, like we could in Halo 3? Say for instance I get the Limited Edition for the Elite Armour set. Would I be able to combine the torso and shoulders with the default Elite helmet, or would I have to choose either the Limited Edition Set or the default set?