I loved my PM9 and carried it everywhere UNTIL I shot the P365. That gun just fits me perfectly.
I am spending a lot of time learning to shoot quickly very slowly and I find that extra half second between shots really works. In today's world of multiple carjackers, the amount of carried ammo just might become important. So much so that I added a CT laser to my second P365 and ordered a Vedder Lighttuck holster with the wing just to see if the extra width would affect my AIWB carry. It works, even with the 12 round mag.
My thoughts with the laser, it might just be enough to put the fear of God into the bad guy enough so I may not have to pull the trigger.
To those that carry AIWB, consider the possibility that any extra length in the XL version might cause discomfort while seated for a long time.