The tattoos also... due to the damage the Lunar Shards... 'lock' the Lunar to a particular Caste. In the pre-Usurption days, a Lunar would start out cycling with the phases of the moon, then settle into whatever Caste fit them the best. After, due to the Lunars hiding in the Wyld, that 'settling' doesn't happen any more (plus two Castes are effectively 'lost' now). Yes. Yes they did.