Can anyone explain how these are practical in the rain?
Perhaps living in NYC (okay, Jersey City is only technically "near" NYC, but I go to the city almost every day, so I'm just going to say "in") has jaded me. Rain clogs (i.e. "Wellies," according to L.L. Bean) would not cut it for wading through 6" deep puddles of backed-up sewer water. But maybe other cities don't have that.