In reply to vscott:
For winter running in the snow, ice etc I use Inov 8 Arctic claws https://www.sportsshoes.com/product/ino903/inov8-arctic-claw-300-thermo-tra...
as these have primaloft insulation
I also use Rooster neoprene socks and Raidlight gaiters.
I also make sure that my legs are warm enough so the circulation entering my feet is not pre-chilled, so I wear winter insulated tights and sometimes waterproof trousers too.
All together, that combination has kept my feet usable and undamaged in 4-5 hour winter runs with deep snow etc, which is saying something, as I have nerve damage so feel the cold.