Tested north of the Arctic Circle!
So, just spent a few weeks in north Finland and was anxious to test these out. I wore them for a few weeks prior to flying out to break them in and all worked out well. For full disclosure, they fit great but are pretty bulky...you definitely need to get adjusted to the feel and how the design impacts your foot strike mechanics. I kept reminding myself they are designed for severe weather & terrain to keep things in perspective during the break-in process.
These boots crushed the Finnish cold when I was out snowshoeing and ice fishing. They did quite well when I was out for hours on a snow mobile, but the tips of my toes did get a little chilly as the hours went on. In fairness, I attribute this to not moving my feet as much as walking so the cold found an easy target. I did a several mile hike at -15F (-26C) and they stood up well, but the cold did start to encroach on my toes towards the end. For both the snow mobile and the hike I will attest the boots did a commendable job and, despite the little chill my toes had, I was still good to go and their service was nothing short of remarkable.