boricua9mm;
If you read my post to mean that despite the best attempts of the user a stamped slide Sig is going to rust no matter what...that is not what I meant. I DO mean that the older stamped slide Sigs I am familar with...beginning around 1983-84 or so...are very much more prone to developing rust than most other service handguns I have seen...specifically including many, many blued S&W revolvers, as well as Glocks, Berettas and the H&K's.
I have exactly NO experience with the Nitrolon finish, but the last new 228 I saw about three weeks ago appeared to be finished in the same blueing as all the others I have seen. I personally carried three different 226 / 228's for several years without a major rust problem, but they all would develop surface rust quickly if left unattended for even a few hours after a shift in high humidity. Going from a heated building or car to cold temps or vice-versa...very common where we live...is guaranteed to make the gun "sweat"...as is concealed carry next to the body in hot, high humidity environments... and there is no way some guys are ever going to wipe it down as soon as they get home.
Primarily, I was trying to convey the fact that, unlike the new 226's and 229's, the 228's are not SS slides and, in fact, DO need a little more of that TLC you were speaking of to continue to look their best.