I didn't want to wait a month or more for a Supertuk, and I got a $50 gift card for Cabelas for Christmas, so I ordered a King Tuk for my XDm 3.8 .45. It arrived today.
Initial impression, good quality leather. Well made. The gun is a perfect fit. Very comfortable so far. I've been wearing it all day, standing, sitting, walking, no issues. Nice easy draw and easy to re-holster. It conceals well with the shorter mag and the extended mag too. I'm wearing it at about 4 o'clock. It squeaks a little when I walk, or maybe that's my old knees. I any case, I'll apply a little oil (to the holster, not my knees) and that should take care of it.
If I remember, I'll update in about a week.