So is the Slaan is BSB and he has the Standard of Discipline do other models get to use his new inspiring presences of 10. Even though the unit with this banner can't use inspiring presences its self ... and can the TG still use his LD of 10 because he is part of their unit and the model with the highest LD?
yes yes aaaaand yes. the only limit is that the TG can't use the slann's Ld through the "inspiring presence rule" not through the "highest Ld in the unit rule" its pretty funny =)