There are a lot of K and J frame guns that are shooters, not collector’s items. For example, I wouldn’t modify a Registered Magnum, but I’d have no issues modifying most Model 28’s.
There is of course, no parasitical reason to do it. You can spend less money on an arguably more capable platform. But, everything doesn’t have to be practical tactical.
Who knows, one day someone may make a post similar to mine on the King’s Gun Sight Co Model 1917 showing off one of the revolvers you modified.
Life is sort: enjoy it.