Yeah, the real benefit is you can carry one with you as a spare. You dont want to hang a beaded one over your shoulder on a ride.
Wire beaded tires fold. Not as compactly as folding bead, but good enough for many purposes. It requires some care; they fold the same way that band saw blades do, for those who know how to fold those. There are nay number of videos showing how to do it, too.