That would be the idea on a semi auto 357. You can share ammo with your other guns while still having modern features. 30 carbine is in a few *expensive* revolvers, but are not common, if you buy into 30 carbine, the M1 is the only gun you're carrying it with
Taking advice from this thread, and now that my car has had major issues I've been forced to address, I think now I want to save up for a M&P 2.0 in 40 cal instead of the SD40 2.0, since I am going to be in the hole for a while. Buy a nice gun instead of a cheap one.
Love the look, heard great things about the coating, and the striker system, while similar to Glock, is distinct enough to not be a total clone. Also like the grip texture from what I've held of them. 15 rounds in 40 too, which is banging.