Customers wait in line for Friday lunch at Truth Barbecue in Brenham. (Photo ©Chris Wilkins/Texas BBQ Posse) When Truth Barbecue opens its new joint in Houston, it’s hard to imagine a location more different from the original place on the outskirts of Brenham. It’s only 80 miles or so as the crow flies, but the new setting could just as well be on a different planet. Posse co-founder Chris Wilkins and I got a first-hand look at the contrast during a recent tour of Houston area barbecue joints. We started at Truth in Brenham on a Friday morning, ordering that…