I'm working on a pack and I like the idea of putting large pockets on the shoulder straps to distribute the load. I can think of several advantages to this but I only occasionally see it on commercial or MYOG packs. Chest packs accomplish the same thing, I realize, but I like to run a bit with my pack on, and a chest pack snug enough for running would be too warm for me on hot days, I think. Strap pockets don't increase torso coverage by the pack, and they're already snug. Has anyone tried packs with extensive strap storage and disliked it for any reason? I'm wondering why it isn't universal.
