Just an update. Email a companty that does this type of refinishing. Promptly received an answer back says that it can not be removed without damaging the underlying finish. But as I think about it, My Sig is a natural stainless finish. Just what you would get with media blasting. I have access to a media blaster, have done aluminum in it with out an issue. Stainless steel is stronger than aluminum, right???
P.S. But this does give me an excuse to NP3 it....