A random YouTube suggests video thought I would be interested in winter boot slip testing. A lab in Ontario is doing the testing of winter boots, they post all their results on a website that is free to view (unlike Consumer Reports stuff): Rate My Treads

A quick glance at their site, I think I would go with Marks Rundle Waterproof Hyper-Dri 3. Quite a mouthful, but they are affordable and at least get some positive vibes on the Rate My Treads site.