As I’m sure you know all too well, results can vary wildly with these things depending on several factors. I was pretty impressed with the materials, design and workmanship of the Colgan model I chose. I’ve been using it off and on since May on my black Challenger and have yet to observe and marring caused by the product up to this point (I just did a full correction/detail a couple of weeks ago). ….and while not hyper-sensitive to sniffing out defects, I consider myself relatively anal about such stuff. As with any new mask/bra I use, I always make sure to constantly and carefully check for potential problem areas especially around the mounting points, edges, seams, etc. I do occasionally find loose debris within the interior fabric but I am quite diligent at removing the bra immediately after use, maintaining it and only installing it as needed. I don’t use it around town or trips that don’t take me on highways/roads that pose a risk.
I also use a factory bra on the wife’s Forester. However, in this case the bra is on the car for much longer periods and I only take it off once per week when washing (sometimes once every two weeks depending on her schedule

). In her scenario, I initially noted light marring (only noticeable under certain lighting due to the color of her car (light gold)) along the hood where the edge of the bra meets the finish. As a result, I try to keep this area well maintained with a wax/sealant to do what I can to help prevent damage. I also noted scuffing to the inner lip of the fender at the j-clip mounting points. These are uncoated plastic unlike the ones on my Colgan bra that are a felt(?)-lined. I use foam ear plugs that keep the plastic from contacting those areas. Being that it’s on the inside lip, it’s probably not something most would complain about or even notice (including my wife), but it bugs me. I’ve been using the bra on the Subaru over 3 years now without any blemishes other than what I pointed out above. To be honest, even that level of marring is relatively minor and easily corrected with a few passes of a light polish (I have had to address this twice since we bought the car in ‘07). ….considering Subaru’s relatively soft paint, that’s not too bad.
I know bras have an evil reputation with some and rightfully so. They do require a lot of care/maintenance and even then, there is no guarantee they will not damage your finish in one way or another. In my case, I simply don’t like any of the clear bras I have seen but I also don’t like to leave our vehicles unprotected when exposed to situations where impacts are likely. Bras/masks (in my scenario) seem to be a good compromise. ….at least for now.
....and yeah,
the commute is a bit of a killer.
Luckily, we only need to do it about 3 times during the week though.