Azhitman,
I also think it is cleaner without a bra (what a universal thought

)
My bumper was pristine 3 years ago. I probably averaged 2-3 dings a month living in Bay Area (all of it is parking).
I would hate to see my car with fresh paint on the bumper to get dinged. I'd actualy kill for that, so my bra decision is purely for the health of others
If I ever get to painting something on this car, it will be the whole car. But for now - bra it is. I'll post pics once I install it.