In reply to CraigMcMillan:
The G14's are quite a bit stiffer than the G12, because the removeable front points extend back quite a way and stiffen up the whole front plate. Saying that if you are using with suitable boots (B3) you should be okay for a bit of walking, and many of our customers use them for a bit of both.
G14's are designed primarily for ice climbing though, and therefore aren't going to be very comfortable to walking all day in. Whereas the G12's are more all purpose mountaineering, and will happily cope with grade 3 or 4 if you want to climb in them. I suppose you just have to weigh up what you going to be doing more of - ice climbing or mountaineering/winter walking.