yeah, i pretty much buy a pack when i see one i like. i have quite a few, but never pass up a good deal or an awesome pack at full price sometimes lol...
the kevlar i had made to fit in there. sometimes id use the small waist pack as a sling across the body bag with whatever stuff in there. the kevlar gave it a little rigidity and the added benefit of being well, level three soft armor, cant hurt. its removable, just slips in. the pack can also attach to other packs, vehicles, i've probably used it the most! even had it attached using the molle back to my crutches to help carry stuff while i had a broken leg...
theyre all super useful bags. id probably keep them if they were black, or maybe tan, lol... my taste changes and i get rid of things that dont go with the rest sometimes... me and all my packs/gear, probably worse than my mother and her purses...