I was hearing the shoes size was running small but the size 8 Namches fit the same as my size 8 Torres, size 8 Cirrus or my size 8 Mountain Mists. If you are used to wearing Montrails buy the size you normally wear.
I have a thin heel and ankle but the front of my foot is kinda wide. Montrail has been the only footwear I can wear since I found my first pair of Torres. The Namche is no different, they fit me perfectly. The shoes breath really well and should help keep the funk from clearing out shelters.
Durability? I know the outsole will last forever. I don't know about the upper, it probably isn't the most durable but that is something I am willing to sacrafice a little bit of to make it lightweight.
The bombay brown is more like a red which is okay but a real brown would look awesome IMO.