I can actually appreciate the idea of a 9mm revolver. Unless I'm missing something, 9mm ammo remains the least expensive centerfire ammo we can get. For the person who doesn't reload their own ammo, it seems a bargain. The power level ain't awful. It's a bit more snappy than .38 Special, but certainly not as bad as .357 mag.
I notice Pietta is making single action revolvers in 9mm. While I certainly would would not choose to "git my cowboy on" with Parabellum marked cartridges in the ole belt loops, but it does help to bring new revolver shooters to our ranks, and maybe keep some going.
I personally think a 9mm S&W revolver would be pretty cool. Granted, I might prefer a 929 to a 986 but....the biggest thing holding me back is a $1400 price tag. I just can't swing that for a toy. Not even a really cool one that wouldn't be too shabby if pushed into a protection role.