all that satisfying shoving, poking, threading and bodging.
Very true. And the real reason for me doing this.
As an aside, I once used the method of "trapping it inside the barbag" but it was too much faff to open the lid and lift out the strap and close the lid every time I took it off the bike, then reverse the process when putting it back. Of course, cutting the rubber shoulder protector off and chucking it away would make the whole thing dead easy. But, as you point out, that's not really the point of A Proper Bodge.