Great pack. I bought one last season and ended up sending it back cause I realized I am a gaper and would be using the thing for lift served 95% of the time. I wanted a pack to carry a hydration system and a few other items(extra goggles, layers, gloves, etc.) and be able to carry skis/snowboard for some light hiking out west. If I actually got to do more than slack country skiing I would highly recommend. For mostly lift served with a water system I like the Dakine Heli pack. Also has option for ski/snowboard carry but much thinner profile.
http://www.dakine.com/p/packs/snow-packs/heli-pack-11l