Jngrbrdman, read my above post. My mom's civic wore a bra for 4 years, NEVER came off, and the paint is great under it. Not a scratch, no fading, and not a problem what-so-ever.
I think the bras that cause damage are non OEM ones that fit bad and move. (cheap-o bras) I can say for one thing the civic bra is firm in place.
Don't mean to disagree, but I feel that if you take care of your car, they are no problem.