I've done the "flip the pleats up in the back" technique many times, and it does work ok. But the problem I have is that eight yards of heavy woolen cloth is a bit harder to keep up and together than the signifigantly less material you are likely to find in a woman's skirt.

Having done it both ways, I just found it easier to take the whole darned thing off. Removing the sporran gets that out of the way, and then all we are talking about is undoing two straps. And then you don't have to worry about it while you do your business.

I need both hands free to read the newspaper, anyway. :-)
M