I've used one on backpacking trips. When you have to go in the middle of the night and it's really cold outside you just use the freshette inside the tent. Just make sure the container you pee into doesn't leak. It's not really all that compact. I don't think I would take it on my bike unless I was on some sort of self-supported tour. Ditto the dirty bag/clean bag. You can use your water bottle to rinse it off. Hand wipes are good to have for afterwards.
As we must account for every idle word, so must we account for every idle silence." ~Benjamin Franklin