Carries super comfortably. It doesn't shift around with heavy climbing gear inside. No pressure points (on me at least), it's almost like I'm not carrying a pack.
The exaggerated arch of the frame that keeps the pack off your back and promotes ventilation is great but it affects the internal space in the pack negatively. It can be awkward to load because of this and definitely cuts down on the amount of gear you can bring.
I've read that this years version of the pack has made the arch less prominent to theoretically help resolves the only complaint I have.