The only issue I've heard of was a guy who clearly needed to just practice more would obtain such a sloppy grip from the holster while trying his mall ninja "quick draw" that he would sometimes not disengage the grip safety.
With a grip that sloppy, he was a danger to himself and others and everyone told him so. I don't know if it ever sunk in to his thick stubborn head.
To answer your question, I have 3 different XDs, have, on one occasion that comes to mind, fired over the course of 2 days well over a thousand rounds through one of them (XD45 compact), without cleaning or maintenance of any kind (no time to do so) with zero,zip, nada malfunctions. And I have never even heard of an issue with the XD fire control system except for the above noted operator error. Whatever that's worth.
