The title pretty much sums it up.
What are the minuses to having these versus a single caliber revolver from the Ruger single action family?
The large plus would be the ability to use 9mm's in one of my revolvers, but is this worth it? I have plenty of 9mm ammo and the magazine fed shooters to use it.....along with plenty of 357 ammo and revolvers to use THAT also!
Just something that seems to keep itching, but usefulness outweighs "fun" for me at thee end of the day.