I have a couple G43s one for training purposes, one I carry. And I carry that one less and less often. I am debating getting out of the G43 game entirely for the following reasons:
With an Enigma I can carry a G26 just as easily in a deep concealment situation.
I have found I can run using a belt and a Perun Holster and be just as happy with a G26.
The G43 is too large for a pocket and with the size and reliability of the LCP MAX in my hands, I really like having ten rather than seven rounds on tap in a pocket gun.
The G43 isn't pleasant to shoot. And while I have not had problems shooting it, I took a new, smaller framed, male shooter to the range who wanted to try out various guns yesterday; he had no problem with the G19 or LCP, but had quite a few malfunctions with the G43 which I attribute to weak grip/limp wristing.
There is no way I would want my even smaller framed daughters running the G43 because they would hate it. I would rather they have a G42 or something fullsized.
The G43 takes its own proprietary mags that don't fit any other Glock.
I think the G43 in general is probably outclassed by the other small 9s from S&W and Sig. I can't imagine in this current world choosing a G43 over a P365.