I have found that MH Tufstretch is better than Schoeller Dryskin after comparing a pair of Mammut Champ pants to MH Winter Wanderers.
The Mammut was a much better fit for me (32 inch waist, 34 inch inseam) but the Tufstretch was just as stretchy as the schoeller, breathed a bit less but had higher wind resistance and was TOUGHER by far.
I rock climbed in the Winter Wanderers almost exclusively for three years- the knees finally gave out this past August. I have destroyed heavy cotton pants and other softshells in days on our low-angle, sharp rock.
I ice climbed in them a number of times and found them to be great for that as well- took a DWR nicely and never impeded movement. For the money, they are a terrific softshell pant.
I am getting the Sarpa pant to replace my Champ pants for winter activities, provided they fit well enough.
Edit: I do not like the pockets on the Winter Wanderer. The thigh pocket is bulky and closes with a snap- so it is not very secure. I also do not like the open hand pockets, but I suppose they give the pant a casual look.