I would go for neither, they will be very hot...go for an alpine guide pant or soomething similar

Triolet's your pant for sure. Gore Tex will far outperform Dry Q over the long haul in both performance and durability.

Hayden- Will an alpine guide pant keep me dry enough if it's snowing hard?

I can't speak to using these for mountaineering, but I purchased a paid in January 2012. I used them roughly 20 days for skiing and sleding with my boys. I never felt warm - even whent the weather was 40+ degrees in the spring. these pants are definitely top of the line in terms of quality. they have a fairly thick fabric - much so then other patagonia pants but that is good for durability. the breathability is incredible but if you are very active then these may be too thick of a cut for activities other than skiing.

For snow Alpine guides will do.. but if its wet, raining or warm then the water will get through. I say go for safety if you're out there for multiple days and go for the waterproof pants. They breathe fairly well and you should not over heat.