In reply to TobyA:
Seconded, using Icelines with the DMM Pivot. Work like a charm, but as someone else said, they like to tangle a lot. Also, my climbing partners get surprised that I fit two 60m ropes and full trad rack with few other bits (guidebook, kindle, water, snacks, jacket, etc.) in the Blue Ice Octopus, a 40l pack. It needs some work to fit everything in, but it's not too bad!
My partner also held a fall this weekend with a DMM Bug which is meant to be used with thicker ropes! I can't complain as it was really soft fall on a single nut 5-6m above the ground...