I'm also skeptical of the above mentioned VFFs. I've been wearing my tropical-weight (they are the only ones with completely flexible soles, my cold-water ones are like mainstream shoes) neoprene SCUBA booties lately with my winter socks. I've had them for about 15 years, so I am not at all concerned about messing them up. I personally get cold fairly quick and wouldn't try this in New England, or anywhere else frostbite is a concern, but down here they work just fine when I am in a situation where I want dry feet+zero drop+flexible sole+no stupid padding. I guess they might be ok for snowy short to medium-length runs even for somebody like me who gets cold. I hate snow, you guys can keep it! I have a new pair of Vivo hikers that I haven't been wearing much because the sole is too rigid for what I wanted to do, but I will review them eventually. They are lovely and warm, with a wide toe box, and I would wear them in snowy places with wool socks, if I weren't bothered by the stiff sole and wasn't running that is. My other thought for snow is waterproof tabi boots, there seem to be a lot of them available for mostly reasonable prices.