I rode the supersport in the snow often. I did not ride when there was slush on the ground though.
It was my only mode of transportation. Just don't lean, pay attention to how long it takes to slow down, pray there is no cars nearby.
Slush for the week after it snowed is the worst, and the slush refreezing into black ice is not fun at all, only drove then when I had to for work.
I think the snow just comes off the tires nicely and I kept traction ok, but the slush just sticks and you can't clean it out, unless your running knobby.