I'm not into stainless guns, but I did buy a Smith & Wesson Model 625 in .45 ACP. The clips got to be too much to fool with, and I used it in .45 AR for awhile. And I sure didn't like the round butt.
Well, I hung on to that gun awhile, hoping to find a bargain in a Model 629. My plan was to use the 5" full lug barrel on the 629, and bore out the cylinder for .45 S&W. The .45 S&W would work with .45 Colt speedloaders, and I figured I'd resurrect the .45 S&W cartridge, as I had cut down some old .45 Colt cases. Never got around to this project, and now the .45 S&W is alive and well again in Cowboy Action Shooting.
But had my project come to fruition, I'd of had a 5" full lug, stainless sixshooter in .45 S&W that could be loaded with HKS speedloaders.