I made a climbing pack for myself, and then a couple more for my roommates. These packs were designed to be durable and carry everything one would need for a day at the crag.
My original design had a zipper on the front so the whole pack could be opened up. The idea was to give a place to flake the rope, but it also provided great access lower on the pack. Still, it was complicated to build so I didn't repeat the front zip.
This was Emily's pack.
And Erin modeling hers.