Originally Posted by myltlpny
If you had the paint done at, say 70%, you'd apply wax as usual. It might initially give it a bit of a sheen, but over time would remain constant. I chose the gloss because I can't stand the line that inevitably forms between the flat black and the gloss. It just collects wax and shows a white line.
If I did mine it would be just the spoiler (the entire spoiler -- not just a stripe) so I doubt there would be a problem with the build-up of wax at the "break" line....