I'm a Texan "born and bred" that's been transplanted to California because of work. I grew up knowing about this way of using a pouch (and not even as a repair) maybe TC's influence is why. I never knew about Texas Charlie until recently but you know how knowledge spreads. But then again scientist say that "good ideas" often develop independently around the world without benefit of each other, I believe anthropologists call it "convergent development."
Despite my pondering and rambling on the subject I would like to thank Texas Charlie for his contributions to "flippin" as anyone who could shoot like him deserves credit for a lot of things.