well i know i demoed this for other people at the first meet and milk was there, i have used many times and i see nothing wrong with my paint, also yeah for me the car is not daily driven so dusting the car off then putting it on sounds good. also when taking it off i have a way.
1) unhook it from the car
2) then fold it in half
3) fold it the third time
4) then start rolling or folding up from the hood to the roof
5)don't pull walk beside the car then slightly pull it towards youand keep folding or rolling
6) then your done
i found it to be easy if you are alone that way.