I know you asked for leather, but I have a couple Blackhawk CQC injection molded holsters for XD available. Right-handed, including belt and paddle attachments.
I have a Crossbreed Super Tuck worn at about 3:30-4. It's a leather/kydex holster, with steel clips, that has great (and adjustable) retention and adjustable cant. Actually it is about the same setup as the Comp Tac mentioned previously. I paid just under $80 total, shipped to my door in about 8 days. Every holster is hand made and backed by a lifetime warranty. CrossBreed Holsters, Innovative holsters for concealed carry-1911-Glock-HK-Sig-Taurus-Kimber-Springfield-Colt-XD
It may not look pretty, but it is VERY functional. If you're leaning towards the Crossbreed, PM me and I'll point you in the right direction for a possible discount.
If you're looking for something in all leather, check out the D.M. Bullard Dual Carry. I don't have this holster, but I am considering getting one in addition to my Super Tuck. You can configure it to be tuckable, just IWB, or OWB. D.M. Bullard Leather Mfg. "Dual Carry" for Springfield XD-M RH
This is the picture of the left-handed holster (they didn't have a picture available for the right-hand)