I have the Goretex version of the 910 shoe and it has done a good job of keeping my feet warm. As a quick test I went on a 30 min walk in 9 degree temps and my feet stayed warm - using Smartwood mountaineering socks and this shoe.

These shoes seem to be able to grip just about everything, from rocks to lightly snow covered trails. The insole of the shoe isn't very thick but this has helped me balance on rocks without causing issues with longer walks.

When ordering these shoes you should keep in mind, that these shoes run about half a size to a full size larger than NB shoes normally run. The outside of the shoe has a hardened toe box and this adds some weight to the shoe but if you are looking for a rugged hiking shoe that is not an all out hiking book this shoe fits the bill.