No, Texan style just would not work. One has to blend in, not stick out. Tatty Barbour, whangers (leg protectors, like chaps)flat hat, (a ratter), and green wellies). No jeans unless you are under 17. If you want to be accepted, wear what they wear as a sign of respect
It is said that when the Squire bought a new shooting suit of Harris Tweeds he would get the Head Keeper to wear then for a couple of seasons to get the "new look" out of them. Otherwise Himself might be taken as a new poser, or Texan l guess.
A green cowboy hat just would not do it.
Mike