interesting... didn't know that.
We'll see how it pans out. I wonder how many gunshops in the boonies are going to respond "fortyfive Glock ammuntion? What you mean, son, you got a G21 that you want to feed?"
or in the city, to a customer... "Ummm, no sir, these bullets won't work in your G37. You need 45 Glock, not .45 ACP"
I simply do not see other manufacturers rushing to produce handguns for this cartridge... "if it ain't broke..." If this is the case, I also do not see a lot of local places stocking up on 45 Glock ammunition, for the G37 would be the only pistol shooting it. It's tough enough finding 10mm, and there are more platforms that utilize this caliber.
further, as touched on earlier, people frequently complain about the ACP's lack of sectional density. w/200gr max, this will probably remain to be an issue unless they really tailor the bullet construction.
I guess I see this pistol as appealing to the "I have small hands, need 10 rounds and MUST have a .45" crowd. IM0 the .40 has shown to be the cat's meow for LE, Military is pretty much stuck with 9mm... without widespread "professional" acceptance (lots of 1911/ACP fans here) I'm just not so sure how well it will catch on.
Now, will it be an effective cartridge/platform combination? You betcha. More effective than the G23? I doubt it, not enough to warrant yet another change.
As far as the overseas ammo restrictions... I wonder how many LE or Military units in other countries carry the .40? I know Ayoob exhaults his G27 just for that reason... no ammo restrictions.
To summarize my diatribe, I've got no problems with this cartridge/platform combo but I think Glock could have spent the RnD on bigger and better things.
Can it work? Absolutely.
Do I think it will be the next "big thing"? No.
time may very well prove me wrong! But I do know having more choices is a generally a good thing.