Whereabouts in SW Ontario? I am in Bramalea, just outside Toronto. "Aggressive snows" sounds like you're in the snow belt (London - Orangeville - Barrie corridor).
I think the Cube will be fine in the snow. Maybe you'll want to put snows on it, but I think that, with the wheels so far out to the corners, she'll be very stable in all conditions, and the DVC will handle the slippery bits for you. If you need to rock it a bit to escape a rut, just turn the DVC off, right? As for the associated winter stuff, Nissan has always had decent heating systems, and I have used my defrost settings a couple of times for the front window with no issues. It's hip to be square, so go buy one already . . .
I think the Cube will be fine in the snow. Maybe you'll want to put snows on it, but I think that, with the wheels so far out to the corners, she'll be very stable in all conditions, and the DVC will handle the slippery bits for you. If you need to rock it a bit to escape a rut, just turn the DVC off, right? As for the associated winter stuff, Nissan has always had decent heating systems, and I have used my defrost settings a couple of times for the front window with no issues. It's hip to be square, so go buy one already . . .