Nice features, but uncomfortable and breakable
I owned this pack for over a year and used it on around 5 overnight mountaineering or hiking trips. I really liked the pockets and features of the pack. Great for organization and the ice axe connections are perfect. The water bottle pocket is nice too.
The shoulder and waist straps are very stiff and I thought they were generally uncomfortable. The pack seems very good at distributing weight to your hips, but they need to add a little more padding. There is a lot you can do to adjust the straps, which sometimes helped, but anytime I took it off, the straps would bend back to an uncomfortable position. I don't think you should be spending lots of time on a trail trying to readjust things.
The plastic shoulder yoke broke and I returned the pack. The plastic parts are strong enough when it's on your back, but can't handle the motion of getting the pack on. I was lifting it (fully loaded) onto my back when the shoulder yoke snapped.
And as others have stated, it is difficult to store the pack on airplanes or in cars, as the shoulder and hip pads are very stiff and will not bend like typical packs (although this wasn't a huge deal to me).
If it was comfortable, I probably would have asked for a new one instead of a refund. The durability combined with the hard padding makes me believe this is not a good option.