Keep looking - I don't do 2-man glacier travel (so far). We carry a second rope all day for a 3 or 4 man team. My buddy did a two-man team with some random idiot, other guy didn't watch the tension, rope draped down into a crevasse, got mega snagged, had to cut the rope. Trip = over. Extra rope might have been nice. Super random, but happened.
okay, I'll keep my eye out for it...