My Warthog is my general crag pack, and I frankly think it's awesome because it is so lightweight, but stays pretty durable. With it being 45L, it is big enough for big glacier climbs and since it is so minimal, it packs down small for smaller climbing days. I take this pack when I am cragging, doing an alpine climb (if I take a bag), and I've even taken it up glaciers.
The Warthog was the bag that Dan and I used when we travelled around Europe, and we used it to attempt the two peaks we climbed in Zermatt. It honestly is just a no-frills bag that does the trick and keeps the weight down to a humble 1.8 lbs. Rad.
The other awesome thing about this bag is that it is pretty modular for how minimal it is, and everything is removable from the hip belt, to the back support, to the side straps. This makes it so that you can easily change things around if you're needing to switch from carrying ropes vs. skis or if you're going to be hauling the bag, you can remove the hip belt easily.
While I have used this pack for ski touring, and it worked fine, it isn't ideal. This is primarily due to the fact that it doesn't ski carry well with it's lightweight straps. This is why I got my Spindrift.
Pros:
Lightweight
Comfortable! (I'm in a size Small, and I am 5'7")
Lots of removeable and exchangeable features
It goes all the way up to 45L, but if you're using less volume, it can compress really nicely and not jostle around too much
Cons:
Back panel gets pretty dang sweaty
Brain garage is small
Doesn't carry skis well, but that's kinda a given, it wasn't designed to.