In the gearset list you can link a glamour plate to each gear set.
That way when you equip it (in a place you can apply glams) it's automatically equipped with the glam you want.
Be a DRK cosplaying Cloud and when you swap to GNB they come dressed in your Squall glam.
Rock a WAR dressed like Gwar and in 2 seconds swap to a PLD dressed like a chocobo.
It's really useful and I think would solve your problem.