I am intrigued by the gearskin concept.
I am making a clone out of denim since I have some on hand. I sewed up the blank today. When done I'll spray it with water proofing.
My stupid local wallyworld is still out of strap, but the bigger store one town away one will have some.
ditto on a cheap backpack for shoulder straps.
My remaining mystery is where in the heck do you buy those nifty little buckles that compression sacks use???
I would also appreciate some guidance on hip and shoulder strap placement theory.