It is interesting, and I have to go along with leaving it as is. 28s were an inexpensive platform to start with, kind of an N frame Model 10, a starting point for custom work. People had them converted to .44 mag back when the Dirty Harry craze made 29s impossible to find, and many have been converted to .45 Colt as well. I'm pretty sure yours is unique!
The more I look at it the better I like it.......nice attention to detail, I like what he did to open up the frame above the hammer to allow for cocking it, the grooved frame top strap to match the 25 barrel, the lowered front sight and milled rear sight, overall very nicely executed!