GB, No worry about the dislike of a XD, to each their own, but a Glock? LoL, hopefully you won't get upset about my dislike of them for EDC.
With no hammer they are dangerous. Particularly if you carry at 4 o’clock position or any position where you can't see the trigger into the holster. It is to easy to get something like clothing stuck between the holster and trigger when reholstering. With a hammer I keep my thumb firmly on the decocked hammer, so if something pushes on the trigger I’ll feel resistance against my thumb and I am able to fix the problem before it fires. Also no safe way to Decock when you get home and are putting your EDC up for the day or when time to clean the weapon.
Additionally the hugh difference of the grip angle means that if you ONLY shoot Glocks you will learn to automatically correct for the angle BUT if you switch back and forth you must always remember to lower your point of aim. Try it sometime, just do a couple of quick draws and snap point with a Glock and with your USP . I will guarantee that you since you use so many different pistols will always be high by a few inches with the Glock unless you mentally re-adjust. Something I don't choose to risk in my EDC, I would rather always be on target instinctually.
Glocks are fine for someone that only wants Glocks but those of us who own multiple guns, I believe do a dis-service to themselves if they carry one. Take it to the range and keep it for just shooting but I would never bet my life on one. Not because they aren't reliable. But because they are SO different than all the other pistols I also use that it takes thought to be accurate, not something I want in a self defense moment.