Quote Originally Posted by Estellios View Post
Gladiator and Paladin are the same thing... Paladin uses Gladiator Skills and IS for all intents and purposes Gladiator so leveling up as Paladin and Gladiator is exactly the same thing, you learn the same Gladiator skills. You just have to quest for the Paladin skills later.

I believe that some people are under the misconception that you can level both jobs and classes. It has already been explained elsewhere that you can only level <earn Exp> Classes. The corresponding Jobs will follow along. The only improvements to jobs are the quests unlocking skills and JSE.