I've shot the Glock 42. In fact it was the first pistol I've shot since having a new lense put in my right eye after cataract surgery. I was really impressed with it. Shot a 2" group offhand at 50' with Blazers. Wouldn't cycle with 90 grain PPUs though. That being said, I liked the pistol and it was quite a lot of fun to shoot with the right ammo (Blazers and Hornady XTPs...90 grain JHP).
Here in Illinois, the prime word in concealed carry is concealed. If the Glock were 2/3 as thick and an inch shorter and less long, it would be in my short's pocked rather than the DB .380. Have you ever shot the Bersa CC .380? About the size of the Glock but much more simple in operation. Been looking for one at the range for my wife to shoot.