I have one on my '09 IS250.
Its great! Most the bugs get hit by the bra and its pretty easy to clean off. Most people I ask did not notice the bra on it. However, I think it might be more visible later on. Less than a year and I started noticing a bit of peeling and some bubbles under the bra. Not very noticeable unless you are doing some detail cleaning. Given time, I think it show.... When I put wax on it, the leftover wax tends to get cluttered on the edges of the bra so its more white and visible. But once you do detail cleaning (exhausting!) it should be fine. I should probably get some car tape and then apply the wax but I'm too lazy to get tape

Anyways, I think the bra is a good deal but its not perfect. Just like taping a book together...eventually that tape will wear off. I'm happy with the investment