I have just gotten a Curtis cab, glass front window, side and back are vinyl/plastic. Had enough snow the other day to try it out, didn't figure I'd need the side doors. 90 seconds later I was back in the shop putting them on. I also had to run the windshield wiper constantly. I was surprised at that, using a walkbehind with the plastic cover the snow doesn't seem to stick so why does it stick so to the glass? Bottom line, I can't imagine not having a cab, even in a light wind and with the front window I was covered with snow in seconds. (I also had to put the chains on as the snow was real wet and slick.)