I'm going all Vit until the end and see how that'll work. If I need str, I'll get it from equips and such. But there's good way to gain threat as a Paladin. One of my favorite is casting Med on yourself/the party and using Flash. I love how they also have a skill to gain back MP. So using certain combos, keeping threat is pretty easy. Well at least from the lower levels, not sure on the higher levels but I'm sure it's difficult.