The very thought of them reminds me of miserably getting undressed in the loo on ski-ing holidays (and you can forget a quick pee behind a bush!) I thought maybe the jumpsuits now in the shops would be trick items that are really trousers and a top, but no.
Why on earth would you want to undo your top and artfully drape most of the garment over your arm while peeing, taking care to keep it off the floor?
Even worse for me as I sometimes have to change my underwear. Tricky enough with trousers; wide legs are a blessing as they'll go over my shoes! I really wouldn't want to strip off in a pub toilet.
Is there some tactic I've failed to learn, or have you all got cast-iron bladders? 