W8:
ok first correction. the paint doesn't erode at all in flight unless something impacts it. dry air does not erode paint at all.
Technically correct I guess. I had (still have, but now it's discarded on my hangar shelf) a Hoffmann HO21-198 wooden composite prop which would shed paint whenever I went flying, let alone flying in rain. Yes, I operate off a grass-over-gravel strip, but the erosion was far, far worse than it is with my Fairy-Reed (metal) prop.