I've been using these almost excllusively since I started this thread, for all kinds of hiking with a load varyin gfrom about 35lbs to well over 100 depending what I'm doing. LOTS of up and down and the terrain is severe. They are holding up extremely well. THey are far cooler than any Gtex boot could hope to be, but I'm sure they'll be warm enough too, I've seen a little mid 20 sgree weather so far in the night and my feet weren't cold at all. Mine are no longer nubuck in appearance as I Nikwaxed them they look more like normal leather now, still look good. and are way waterproof. I don't feel like I lose any waterproffness over a Gtex boot with proper leather treatment.