I have worn hollow everyday for the past year and a half. They are finally starting to wear holes in the bottom of the heel. I wear them at work, the gym, out and about. Overall they have been great for a consumable item.
My feat are less sweaty than my previous darn tough socks. I layer with liner socks when out and about on multi day hikes/hunts. But they don’t last as long and I can’t send them back for a warranty. I may try Altera next - which do have a lifetime warranty and are made in the USA alpaca.