I'm down in Cornwall this weekend and most of the roads are clear and girtted. About an inch has fallen in some places. Found some black ice on the smaller roads. Was impressed at how grippy the zed is, even on ice! Driving cautiously, smooth soft braking and acceleration, it hardly even lost traction. Last year I made it to the office during the snow spell. Got to work to find 8 inches of snow. The road was slushy and got a tank slapper going on a couple of times.
One bit of advice, going up hill, get up momentum before the hill. On the hill balance the throttle to hold momentum without spinning out. Once you break traction, you'll slow down and will be impossible to accelerate again grinding to a halt. Of course, that's only if you must go out in a rear wheel drive convertible in subzero conditions!
Good luck and be safe.