the only other issue is if the surface gets scratched or galled as its being pressed in, then it will no longer be protected. same for any machined edges like where the end of the casting meets the stainless. that would be my guess as to where the corrosion will find its spot to start. then it just undermines the surface and thats that. but I still think you would buy some time at any rate and it will be tons more protected than just painted or raw.
vwking- im sure that pic does the color no justice. I have a metallic red a friend did on my intake grate and its awesome, pics look pink or faded. something about the metallic or pearl that makes it look hazey at certain angles. not at all what it looks like in person. nice color.