I've got zero need for one, but I don't think I could resist a non-MOS 30.5, I really don't.
Same here. Personally, I think it will sell simply because some people will like the look and balance more than a different configuration. I can understand the desire for something that gets you back on target in the competition sphere. Small fractions of a second per shot will add up depending on how many rounds are fired. However, I don't believe it matters in a self defense situation for the simple reason that people don't have an instant reaction to the shot, and aside from jerking because the were shot (one kind of reaction), unless it is a CNS hit, the physiological effect takes longer.
I have several variations of the Beretta 92. Personally, I don't like the appearance with 0.2" of barrel projecting from the end of the slide. Aesthetically, the 4.7" is much more attractive to me. Same thing here. If you like it, you like it. If you don't, you don't. That's really the heart of it. I have a G45. Were I to get the G49, then I would have 4 possible configurations, same as a G19 and G47. Just different numbers on the slide. But I put a comp on the G45, so I really don't have a G19 length slide/barrel anymore.