I wish S&W would make a 30SC I or J-frame (moonclips for quick reloads), but I agree that it's unlikely to replace .32/.380/9mm in the little-gun market. Just because something might be better, doesn't mean it's going to replace the incumbents.
I would never talk anyone out of a new caliber...
He who dies with the most toys WINS
There just hasn't been enough time to see if it will stick. That'd be my only concern.