I think the idea is fascinating.
I look forward to seeing one. Always liked the idea of the old fashioned English-bulldog style pocket revolver, with a large bore and short barrel. A lightweight version is particularly enticing. I personally don't care if the 230 ball is only going 700 fps. I might consider a 200 gr SWC going just a bit faster. As to "targetability," I'd think that a Taurus would be able to keep five rounds on the vital area of a standard silhouette at 15 to 20 feet, and this is about all that's necessary. Such a revolver, in my mind, could be more easily managed than a lightweight .357 snub.
When you come right down to it, an Airweight J frame is no pleasure to shoot with +P .38s, nor, really, is a Kel Tec .380. Kinda like opening an unsleeved parachute at 200 MPH - - Sure, it hurts, but if you need to use it, you'll be giving thanks you HAD it.
Best,
Johnny