FWIW, I'm all for dumping Russell. That honeycomb crap is total garbage, so like 4 of 10 team uniforms are decent looking unless we've got throwbacks on.
Additionally, while I think there are still GT alums in the executive suite there, it's not like it's owned outright by GT alums. Berkshire Hathaway owns them through Fruit of The Loom. It comes down to how much money they're willing to give us, which I think will always be outsized compared to Nike (we don't really add much) or Adidas (they're a clear #2 and I think they're happy there, so the programs they have are enough). UnderArmour could be a wild card when the uniform contract comes up, but depends if they're still in the business of buying market share.
While I haven't found UA's kicks attractive, they're uniforms have been generally nice. The ND hoops unis with the old school look are really slick.
The former Russell owners that were GT grads have either already given what they're going to give to GT or don't have the ties to Russell they once had to prohibit continued giving. If UA offers us anything close to competitive money-wise with Russell, I think you have to run with UnderArmour for the HS connections in hoops & football.