About the only blue wear one would get is the turn line on the cylinder, some thinning of the blue on the ejector rod, and the area around the firing pin opening on the frame. Most finish wear from use is from holsters and handling it clumsily, banging it into other things, not from shooting it.
I have a few Model 27's and pre-27's. The only ones I haven't shot are the pre 3-1/2 inch/gold picture box gun from 1955, and a 6-1/2 inch Model 27-7 8 shooter, of which S&W only made 100, which I hope to trade someday for the same gun with a 4 inch barrel equally pristine.
The others are all a great pleasure with which to create fired brass.
I carried my 5 inch Model 27-2 on my gunbelt during the graduation ceremony from the Police Academy. With a gorgeous pair of smooth presentation stocks, riding high in my Safariland thumb break on my Sam Browne, it was positively HUGE compared to the K frame S&W's, Ruger Security Sixes and Colt Official Police 4 inchers my classmates wore. It apparently drew some attention from some audience members, like, "EEEWwwww, it's such a BIG gun he has!" I was wearing it again when President Ronald Reagan visited Salt Lake City and I got put backstage with the Secret Service agents' security detail and the President, before he stepped out on the stage to speak, probably because my Ike jacket hadn't arrived from the tailor yet!
You bet I had shot that gun a lot already, even though it was the nicest gun I had at the time and I bought it new.
I also had shot and carried another 1950-built, pre-27 3-1/2 incher
on duty a bit, also sporting a gorgeous pair of smooth presentation stocks. Then I thought about it, and getting it dinged, and soon discontinued the carry part after realizing just how pristine it was.
After all, they were fired, at least a little bit, at the factory. A little more won't hurt them, and the dollar value between an unfired Model 27-2 or earlier gun and the dollar value of one carefully shot and kept clean, is going to be pretty small. And that dollar loss will have purchased some true pleasure.