Steve,
In general, I agree with your statement. I too, do not like modifying original guns. In this case, I picked up the 1954, M28 for a very good price. It is missing its original grips, but otherwise is a very solid 98%.
I also have a slightly used 3.5" barrel from a m27 (pinned) that I was thinking would make a very cool, never produced, 45 Colt if it were to be rebored.
It may be just a dream, but I think the above combination would make a right-fine and classic N-frame that was never offered. A 5-screw N-frame, recessed cylinder 45 Colt, 3.5" light barrel, adjustable sights. Hmmmmm.
In this case, I would only need to refinish the barrel after reboring to match the m28 finish. --OR-- Refinish the whole package (including checkering the topstrap) to mock the m27 level of finish. That is, no doubt, a more costly option though.
Oh well, I think Bowen may bet the piece soon anyway - one way or another...