Bras usually end up doing more harm than they do good in my experience. They often leave wear marks behind that won't come out easily. But like you said, with 6k miles, it probably hasn't done any damage to the paint yet.
The light bars to me just seem like a cool kid, teenage thing. I've never liked the look of light bars at all. I like a good set of LED headlights and fog lights, but the light bars just look so... Chinese I guess!