I shot my P365XL in one USPSA match. I bought a JM Range/Competition holster and screwed it onto my belt carrier.
The only negative I had was that when I went to reload a dropped mag on a stage, the follower had barfed out of the top of the mag body feed lips. I stuffed it in and kept going.
Later I found that it is pretty easy to coax the follower past the feedlips, much easier say than a Glock mag, not sure if a persistent problem, or I just got lucky, or what, but it’d be something I’d watch for in future.