In reply to girlymonkey:
Not entirely a dedicated winter boot though cope perfectly well in winter are my xt gtx boots ,Got issued a pair about three yesrs ago. Been put through their paces, used and abused and theyre the best boots ive ever owned. Never had a single blister in them, always dry feet at the end of the day. No signs of materials degrading or parting etc.
So basically my experience of mammut boots(discretley labelled raichle by the way) are spot on and klif the winter boots are put together as good as these then i dont think youll go far wrong.
To add to the above, the ine thing im not overly struck on is the rubber used on the sole. Its a vibram sole, very hard wearing and after three years use they still perfectly servicable, they arent the best on slippery surfaces when compared to my freneys. Just slippery rock and such like can be quite tricky. But being aware of this i take more caution and generally dont have problems.