Mengwrote a review of Ortovox Peak 35L Backpack on January 24, 2018
Familiarity: I've used it once or twice and have initial impressions
This bag is perfect for my climbing needs. This bag is can be customized to meet the demands of day climbing adventures and you can remove or hide the features you don't need.
Backcountry Skiing - It has both the A-frame and diagonal ski carry options. It also has the shovel/probe pocket.
Day Climbing / Mountaineering - Dual ice tool carry, crampon carry, and helmet carry options make this pack at home in steep terrain. The fabric on it also seems like it can take a beating. I love how on the right hip belt there is a pocket, which is perfect for my camera. Then on the left hip belt there is a gear loop, which makes getting to things like screws and rescue gear easier.
Hiking - This pack can carry enough gear for overnight trips (I haven't done one yet with this pack). It is comfortable to wear, but does get a little sweaty. I'll need to do more hiking to figure out if the back wool panel helps.
This pack is awesome for ascents and descents in cold or warm weather.