I know the New Jersey State Police used P7M8's for a while but switched some time ago. Washing DC Park police used them as well, in fact they ordered 97 with phosphate finish. HK US brought 100 in and one of the HK US employees in VA purchased one of the 3 overrun. Some years later I bought it from him still new in the box, 1 of only 3 in private hands. 9-10 years someone contacted me wanting it. I refused but he was persistent and offered "pick whatever new pistol you want and we'll trade". I did but I'm not sure I should have.....
I heard some company (I guess in Mexico) made some modified P7s for the Mexican police or military, the modification was a manual safety of all things.
P7Pro in Texas has been offering some modernized versions but I'm not sure how many they're selling? I don't hear much discussion about them.
Yes it's a very accurate pistol with its excellent fixed barrel but they do get hot after 4-5 magazines.
You carried one, were you a policeman?