Have you been happy with it? I've seen nothing but good reviews, and that's probably my next weapon, but I'm leaning toward the 4" or even 5". The other one that tempts me is the CZ, because you can swap it back and forth between .45 and .22, but the conversion kit is awfully pricey.
I haven't fired an XD yet, but I've held one, and it's remarkably compact for 13+1 rounds of .45 ACP. I have pretty small hands, and a 1911 always felt a bit clunky in my hands, but I'm comfortable with the grip on the XD.
I am very happy with the gun, and for carry it works well with the help of a Crossbreed IWB holster. The combination works for me. The holster is a leather backing with a Kydex pocket. Thin and (dare I say?) very comfortable.
The gun itself fits me. It's the compact 4". Came with two mags a flush fitting 10 round and a 13 with the extension. It shoots well, haven't had a bit of problem or stoppage with near 1000 rounds of mostly hand loads. If there is a complaint at all it's with the availability of magazines. The 13 is easy to find, but the needed extension or the flush fit 10 are scarce yet.
The size is a bit larger than the Glock 30 (4" vs 3") but carries and shoots very nice. It doubles as the nightstand gun too. I remove the 10 round mag and insert the 13, the slip on the Streamlight M3 I found at a VERY good price at a pawn shop, and it's ready. 14+1 with vision.
Actually, it's backup to this: A short barreled Mossy 500, but I figure it can't hurt to have it, JIC. ;)
I’ve fired the XD 45 caliber in both the 4” version and the 5” version. It is a VERY nice handgun. Think of a glock with a few improvements. The gunshop owner where I buy my handguns tells me the XD is the fastest selling handgun he’s ever seen. He carries one himself. I think of the XD as basically a glock but with a better shaped grip frame that fits your hand better. The grip is also thinner due to the mags not having a thick plastic coating.