Just don't rub too hard or it gets hot and marks even more. Given that it's there to protect, I don't get too uptight about marks although my Plus 4 doesn't have any scuffs yet. My Roadster doesn't have any protection, and after 14 years, no significant scuffs on the running boards.
Obviously we are not all pensioner gymnasts, but you should try to get in and out as if there's no protection. My mother adopted the practice of dragging her feet over the door threshold on the tin top until I fired a few choice words...……...
