So, I bought an XD .40 service model, two tone with the tax refund. It pretty much replaced the Glock 23 for every day carry.
I carry the XD in a Blackhawk SERPA just as I did the G23. I am a SERPA fan.
After one month with the XD here are the things that I have noticed. First, I have put a little over 1000 rounds through the XD of various makes and weights. Both FMJ and Hollow Point. I have had no failures or stoppages of any kind, even when trying to limp wrist the gun to create a failure. I can limp wrist the G23 into a failure, but the XD seems less sensitive to it.
The XD is physically a bit larger that the Glock 23. Both in grip length and in slide length. It also just "feels" larger and by that I mean the gun feels a lot larger in the hand and on the hip that it actually is in relation to the G23. I think part of this is the fact that the bore axis is a good bit higher than on the Glock. That fact does add to the recoil being more "flippy" for lack of a better term. But still very manageable due to the fact that the grip is a much better fit for my hand.
I do not like the 3 dot sights on the XD as much as the standard Glock sights. In fact, I much prefer the Glock sights.
I really love the loaded chamber indicator on the XD over what Glock passes off as a loaded chamber indicator.
I am constantly annoyed that the XD is a bit physically larger that the Glock 23 but holds one less round in the magazine. I know Mecgar makes a 13 round mag for the XD service and I have 4 on order but the fact that the factory mags hold only 12 is just annoying.
Bottom line, they are both great guns but for different reasons. If I could take both and meld them into one gun with the good attributes of each I would be in heaven. The XD grip on a Glock, with the XD loaded chamber and cocked striker indicators, the Glock sights and bore axis....I'd have the perfect gun.
As it is, the XD is my normal duty, every day carry gun and the Glock is my hard duty gun. If I am going to be some place where I know I will most likely be getting dirty and sweaty, or I may be spending time on the floor where the gun may come in contact with dirt, grit and filth, the Glock is on my hip.
I love them both.