This, I've lived in CO since '92 and nothing beats a full on Vibram sole for a boot used on anything other than dry pavement and indoors. I ordered the Wolverine 1k Austens when they were $200 on Gilt and they only had a half sole with very shallow lugs, that sole and that boot are not meant for rugged use, they are work boots. Same with the Vibram gumlite sole Chippewa uses on some of their boots, no good in the snow. I have been through a lot of medium/heavy bavkpacking boots and they are hard to beat in winter conditions... my current Lowas look nice and are awesome in difficult conditions. Nice ones use one piece leather construction. Not as bulky/awkward as Sorels, but Sorels are hard to beat for standing around in very cold weather for longer periods of time.
While not exactly cheap, the Julius 7 back zip engineer boots with vibram soles don't just look good, they are some of the best built boots I've ever seen in my life. I have the ones I'm selling in my sig below in size 3, they feel like they will last a lifetime. I have tried them in snow and ice in the last few days, they make great winter boots which is what I was looking for.
I also have a pair of Dirk Schonberger winter boots with a tongue made out of calfskin and wool laminated together that wraps around the entire foot. It's Belgian... where it's cold but not a ton of snow, so they are good for when it's cold but not slippery... I have the low profile Vibrams on them which make them work for after the snow has been cleared and the welt has been waterproofed (from the factory). Inspired by miner's boots...The color irl is much nicer than the pic.