Alpine Dump ski mountaineering pack

This is a design I have had in the back of my mind for over a year. I finally took the time to build a prototype just to see if it would work.For a long time i have been getting requests for a ski pack with a opening back panel, like other ski mo brands offer. These designs have never made sense to me for several reasons: the lack of a functional back pad, the lack of load control, a zipper on your pack in hot weather. I can see why people like it the full access but on the harness side of a pack didn't work for me I build a lot of packs with the side access zipper, many with the dedicated ski carriers.  I had always thought a zippered opening pack panel would work better than a single zip for access in an emergency. I wanted to not only make avalanche tools readily accessible, but everything else in the pack, yet not take away from proper carrying ability.  I am not the first to have a design like this. Lowe alpine used to have a smaller hatch opening on their Specialist packs series,