Hmmm...I guess I'm a voice from the dark side on this - I pull out my Biks when it gets cold and ran in them very happily all last winter. They weren't too good on frozen lumpy snow (nothing is) but I found them fine in the fluffy stuff.
It sounds like you're a fair deal further north than I am here, which is near Philadelphia.
I'm glad you have found a solution to keep you running.