Ok once again I will chime in, we have a 1995 motorhome. The previous owner had the original Beaver bra on it when I bought it. It was shot so I took it off on a trip to Vegas from Oregon 1 way and all the chips on the front end are from that 1 trip. It had zero before we left.
A bra protects your front end very good. As far as wear on the paint/ gel coat there was almost none on the gel coat or decals. Yes some that would have to be pointed out to most but very very minimal.
I do however take mine off when we do not travel and I do wax under it every time I install it but the previous owner did not and from the looks of it rarely even took it off.
The new bra was made in Portland Oregon and has felt type lining, the old one was well made but had a rougher vinyl type back.
On a black MH. you may be able to see scuff marks from a bra.
Pogoil.