I haven’t used the AM41 but the old AM40 that it’s based on was good- not as grippy as Five Ten but still well into “more than enough”. Not really all that waterproof, better than a Freerider but then that’s not hard.
If you can track down a pair of purple (not black) Sombrio X-Shazams, they’re the best winter flat I’ve ever come across. Hightop, lace flap, fairly splashproof, and warm. And decent grip obviously. Sadly discontinued. The black ones have a vented toe so don’t get those!
Five Ten Element Freerider seems good, just done a first ride in those and pretty happy. New FIve Ten Impacts are pretty bad IMO, horrible feel-free sole, the new Sam Hill is the same design I think. Apparently Sam doesn’t wear them, which is interesting 😆