1st Day Impressions:
They smell like fresh leather and Wow, these mitts are super soft (inside has a sort of fuzzy material) and my hands won't stop sweating. They definitely aren't a spring slush glove. However, I skied with them in -30 and they were perfectly fine and my hands never felt cold. They're really water proof as well from the outside. The mitt's fit nice and snug in XL, I would definitely size one size up from what you normally do with pow gloves. For example I'm a Large in Dakine and a Medium in Saga mittens.
I'm really impressed with what pow has to offer with these gloves. They're not overly expensive, but the quality you get is amazing. I've thought for sure that I had broken or torn them when i got them stuck in some places, but they come out with just a scuff (probably due to the fact that they're made of a durable leather). They're gore tex so i've never gotten wet with them, and I've never gotten cold with them on either. The fuzzy innards matte's out after a while and doesnt feel as nice, but it's definitely still warm and waterproof which is all you could really ask for in a mitt.
All in all, I really liked these mitts and would pick up another pair if I could