I love these.
Very warm and comfortable. I wear a size 10.5 us in shoes and I have a 10 in these, which fits perfectly. I took these to the local crag to wear while belaying do that I wouldn't need to put my approach shoes back on (and because it was about 40 degrees). The tread is sticky enough to hike around from climb to climb on the rocks, and they seem quite durable. I love them!