My prediction, & I'm prepared to eat these words if I'm wrong, is as follows:
1) The G43 sell like hotcakes;
2) It will have some initial "growing pains," perhaps the infamous BTF Syndrome;
3) The True Diehard Fanboys of Glock will blame #2 on ammo or Shooter Error;
4) Glock will figure out the problem and fix it; and
5) G43s will continue to sell like hotcakes.
As for me, I neither need nor want one, but if an opportunity to shoot one presents itself, I won't pass it up. Maybe somewhere down the road, I'll change my mind and decide I need a single-stack 9.
What I'd really like to see, but haven't found yet, is a picture of a G43, side by side with a G19, from the rear. I want to say that I've read that it's 1.02" wide, and Glock's website says the G19 is 1.18," but I want to see the difference.