You said member ;)
Its been 4 months since I installed mine. No chemical reaction at all. I agree with Mr Chaiman, the thickness of the fender alone would prevent this, if it even were to happen.I am not saying it will, but be careful on using epoxy or glues on composites/plastics of unknown makeup or even known makeup, even seen it on adhesive bonded metal. I have seen where ever the epoxy sits ends up showing through on the paint side because of chemical reactions...almost ghosting.