mine is even simpler... i made my flightsuit out of a really heavy cotton twill. my straps are sewn right to the suit. i just have 2 straps with rings attached to them.
the pack has non-accurate clips. rather than the hooks that should be there, i used the clips from a rifle sling... rotate and lock into place.
i've got the us divers buckle on a belt that's riveted to the pack. that keeps it stable and close to my body.