It's a .45acp Willieboy. I am on the hunt for the 9mm version to go with it. It's funny you mentioned TT because I am looking at them and Nelson holsters. The modern cowboy look may draw to much attention when I OC.
Catter, in Texas, we must still carry concealed until 1/1/2016. I don't have plans at this time to OC but I have looked at some beautiful OC holsters. I'm sure you know is this, but Milt Sparks also makes some great holsters. I have one of their VM II holsters and it is superb.