I do.... As I said above I use Rustoleum truck bed liner to recoat them once or twice a year

Rocks vs Spray Paint...... Rocks will always win

 

I have to agree but touch up is as easy as spray and go, blends right in.

 

I had mine sand blasted and coated with line-x . After almost a year they still look good. some rust stains here and there but that's just because my local Line-X shop is run by a bunch of goofs who take no pride in what they do. My advice, hit it with some U-Pol etch primer #8 and coat with raptor liner. It's just as good and you can always mix up a small 1oz batch if you ever scuff it up. Here's my PSC bumper and grille that I just recently Raptor lined