I bought a pair of these on-line last week. They're a nice pair of pants, but it's worth noting that, at least on the 2009 model, they don't have a full length side zip. To me, a full length side zip, is separating at the waist, which is what I expected. This allows you to don or doff the pants without removing snowshoes, skis or crampons.
These have a 7/8 zip, which comes up to just below the bottom of the zip up pocket. You can definitely get them on and off over boots, even a pair of Makalu midweight mountaineering boots, but there is no way I would try it with crampons on.