No I haven't but breeding multiple breeds isn't a good sign - but I won't say anything because I have not dealt with them personally.
If they contact you - Are you going to go visit first ?
IF I were you... I'd go look around and see what goes on first before you buy ...and that's hard to do cause you may fall in love though...
The other thing you can do is post a new post here and ASK if anyone knows them - Texas is a BIG state - you never know who may see it. Good luck!