i think i would. i don't own a pair, however. yet. but thinking that with a skirt or pants that run long (and you're going to change into heels upon arrival at your destination) they'd be a hem-saver!
Hell to the no on the green ones. The black is OK. If it's so wet out that I'd need to wear special shoes, I don't think I'd be all that safe in anything with a heel. I am not very graceful.