I would evaluate this boots as nice if the zip fastener hadn't broke after 3 weeks of wearing. The zipper is still functional but it's not really handy to close it now.
Overall impression is smthng average: not superb but not too bad.
Yes, it seems to me that this boots are not for real cold weather (I would say not below -15/5F) since the insole is not very thick (I have another pair of Kamik for my son where they used better insole with reflecting layer).