Has anyone had luck with using VS upgrades not only TATL but also on connections beyond LHR? The T&C say that we can use GUCs or VS globally, not just TATL like on AF. I realize that VS doesn't have so many destinations or such a large network, but does this work in practice if you're going some place that is served by VS? In fact, could one go east to Asia through Europe using GUCs on VS?