My only comment would be that if you coated the car in primer as I did using a PPG 2K epoxy primer and not the regular rattle can stuff, you would be ok. The hardened epoxy primer is tuff as nails and not porous.

I did Schutz coat the rear wheel wells yesterday and I am happy with the turnout. It's a messy process but well worth the time. Only thing left now is the dashboard painted black. Then its going to assembly and get the car back on it's wheels. I'll post some pictures when I have a chance.