I spotted several online MK9 holsters not badly priced. I'm wondering if the K9 would fit. I know the K9 slide length is longer as is the grip. The slide could protrude out of the holster if open.
The gunsmith that I use for my 1911's, works out of a large gun shop with a range. I was in there last week and he told me that all the guys that run / work the range have told him that the XD's they rent hold up better and have less problems than the Glocks. So I know they are well made guns............You know the muzzle sticking out of the holster is a no go for me. In the pants it can be uncomfortable, the front sight can lock the pistol in!!!
And it only took hearing my xd mussel drag on a concrete shooting bench once, and I never ever used it again!!!
The finish is tough on them xd!!!