They seem like a really good alternative to a normal biner or those
absolutely useless petzl 'ultralegere' pulleys when you want a couple
just in case. Running around glaciers and whatnot- i need a few biners
lying around anyways. Could I use these for rescue situations? If
they'd double as a normal biner and a biner/pulley, they'd be worth a
few extra bucks to me.
I didn't see any specs on working load, although I'd imagine the worst
that could happen is the pulley stop functioning, and just end up with
a normal 11mm radius surface.