Very Cool Concept.
I have the panel inside a haley strategic flatpack plus. I zip-tied a T-rex arms ragnarok attached to a Tek-lok to the panel along with a blue force gear 10 speed AR mag pouch for general storage (pistol mags, gerbers, knives, etc.) If you plan on carrying a gun in a bag, it's smart to have it in a fixed position within the bag so grabbing it is repeatable. If it's floating around inside a big pouch, everytime you grab it, it's different. The panel offers the repeatability needed to be quick and efficient. Definite recommendation.