TOUGH! - Great Alpine, Eh, Ski touring
These are the toughest pant I've ever owned. After 4 seasons of BC skiing and climbing they have many battle scars from crampons, ski edges and rocks, but are still going strong. As a preface I am part of a Gore sponsored program called Mountain Techs that occasionally tests their products.
I am a big fan of the GoreTex proshell fabric. I've found it to be incredibly durable and overall breathes very well for a hardshell - though it is somewhat loud and crinkly (barely softer than liquor store paper paper). The stitching, and attention to detail is also up to Arcteryx standards which you expect for Arcteryx prices. The overall cut is great for climbing with plenty of fabric above the waist to keep a nice overlap with your jacket and keeping the elements out. This is particularly nice when wearing a pack that make the back of your jacket ride up. The internal boot gator works well on fabric or hardshell/ ski boots thanks to a metal hook on the front that keeps it in place. Finally, full length side zippers are a huge plus on these making it easier to regulate heat and remove/put on pants without having to remove boots. I use this last part for search and rescue missions as a backup rain-pant that is tough enough for brush/off trail conditions.
Over the years I've found better pants for ski touring.It would be nice to have real pockets such as thigh pockets for a beacon on one leg and on the other, things like snacks, camera, or avalanche science tools (thermometer) that you want quick/regular access too. I also find the bibs a pain for shedding layers and poor cooling on a skin track. As a result they usually end up hanging down instead of being slung around my shoulders on the ski up. Finally, I find that metal gator hook (which is nice for climbing) a pain for ski transitions because it snags on the boot somewhere and I usually have to take my gloves off to undo it.
Beyond that it is a pant that simply will not die