I've already purchased the 2nd pair, because I am actively lot outdoors in winter and have this shoe a lot of joy. The shoe concludes well, keeps you warm and dry - no ifs and buts, and in all situations. However, since he is not so durchlässsig as one might imagine, he was after 2 days of wearing a break of 1 - 2 days get to air out - otherwise it can strike sensitive noses already - and I have no sweaty feet ;-)
With snow it is thanks ausgepfägter sole relatively safe to wear good grip on ice and more - with a degree of caution is required when ice anyway; I am referring here to a comparison with normal shoes.
The size is significantly different from what you would like to be used - I have by default size 42 and wear here 44 2/3. But there is still room for a thick pair of socks warm for extreme temperatures in this election.
Addendum of 05/18/2013:
On one of my two pairs of Columbia Bugaboot the sole solved within the warranty period. After contacting Columbia and submitting appropriate proof photos you agreed to send me a new pair of shoes from the latest collection in August 2013 by the manufacturer. Now that is good customer service.