One good reason not to do that is that I've seen accidental depantsing happen twice and have heard of other mishaps. It'd be a real bummer to have that drawstring come loose. Aside from the sharing hospital scrubs thing, they are also pretty thin. I mean, if you are a dude, slinging serious pipe and like everyone to know you're slinging pipe, then have at it....or if you're the opposite.
"Sadly, there are no integers on this scale, so your gangly adolescent attempt to be clever has proved futile."