Brought three pair of socks for 11 days in alaska, two were alpaca, purely alpaca field socks. The third set was F2F ELY midweight.
The Alpaca were a quick fail and relegated to wearing to sleep at night and under camp crocks.
I started off with tje Field socks on day one and by the first afternoon they were loosing shape and slipping, switched them out for the second pair the next morning and same issue. Used the Elys the reminder of hunt. The Purely Alpacas are now in my everyday sock draw as they couldn't hold their shape for serious hiking in rougher terrain.
I should add that I have a couple pairs of Hollow Alpaca socks as well and they didn't seems have that issue, that said i didnt use them on any hunts yet that were extended and challenging.
Honestly I think the issue is more related to construction vs material however I am no expert on sock fabrication… who knows maybe they are
related .