Michelin Transworld City MTB tires. They're just fine in 1" of sloppy, frozen-margarita-consistency slush. On heavier packed snow, not so much.

No falls but I had to ride at a snail's pace through the one section of MUP that always seems to be the worst whenever it snows. I call it "the ice box."
Back roads up here in Vermont are slushy but I stayed in cage tracks (hey, what do you know, cages are good for something after all

) and had a pretty fun ride home. Time for a beer and some fuel intake.
P.S., The tires make a really cool tread pattern in the snow.