The JetForce Technology is without a doubt awesome. It's easy to learn the system, simple to maintain, and fun to practice (especially multiple times with friends). It makes for a well-oiled tool to use in the worst scenario, hopefully avoided by safe avalanche practices. I have not yet, and aim to never use this pack in an avalanche, but I do have some comments on it as a backcountry ski pack.
Packing: The 28 is enough space for the carefully packed half-day tour. More than that and you know you'll be running low on water and snacks because there's simply no space for extras with a small med kit, spare goggle lens, a layer, gloves, and skins. I'm not sure who designed the pack to have the main compartment accessed only from the back, but it's annoying to take the pack off to ever stow a single item or grab a snack. The avalanche tool compartment on the other hand is easily accessed, easily packed and separate from the other necessities.
Fit: Pretty good, I'm a 5'6" lady of average stock and I like the fit of the M/L over the S/M. Nice belt closure, easy to fumble with mittens.
Color: Love the red, and I've been told I'm easy to spot.
Overall: Would buy again considering the price point of the nearest competitor but the design of the Arc'teryx bag is far superior in terms of actual useable space for the other gear I like to have with me for a bigger longer day tour. I guess I'll have to become a better organized and stream-lined backcountry skier and not bring 5 sandwiches and 4 extra layers and my trusty space blanket.