Just my .02$..... but I have never had a good experience at that dealer.
RPM, on the other hand, loves triumphs and are great bunch of guys that know thier stuff. They are easy to talk to and will provide you with a lot of advice. It's worth the extra 15 minutes just to look at all of the classics they have on the floor.
I do believe they have a RAT club at RPM and they have a great Open House every year.
http://www.rpmcycletx.com/main.htm
North Texas on the other hand, seems to treat the triumph guys like they are second class to the BMW guys.
Like I said, just my two cents....take it for what it is.