Kjellwrote a review of La Sportiva Frost GTX Boot - Men's on January 11, 2015
Familiarity: I've put it through the wringer
Fit: True to size
I've had these boots for a while now, and used them in temperatures down to -10degC. The are warm and comfortable, good for walking, even when walking a little 'off trail'. The fit is as advertised, makes room for thick winter socks (but my foot is quite narrow).
The Vibram Ice-trek sole isn't as good as they claim it is, but not worse than any other winter boot - this is why it gets 4/5.