That having been said I personally would be inclined to allow trainingless multi-classing into Barbarian moreso than almost any other class including sorcerer. Fantasy is full of tropes of heros who need guidance to unlock their magical inner potential, whereas the barbarian is just a guy with a bad temper.
Rereading all of Howard's Conan this past year, I'm inclined to go the other way and say Barbarian should be one of the harder classes to get into - unlike magic and sword craft you can't study being the uncivilized other, you have to live it. But I'm always open to a good story about why the character suddenly got the ability to run faster, rage, dodge, be tougher than people whose entire training is combat, and find traps using a sixth sense.
Multiclassing is just a default assumption of the game; there's no logical reason to force training on a PC doing that if you don't require it in all cases. More importantly, having the possibility of no training for some things while requiring it for others is blatantly unfair to those who are saddled with the training requirement and will tend to make those players angry.
The character advancing in a single class presumably spent years in an apprenticeship or had vast life experiences developing many of the things that go along with being in that class: a host of weapon/armor proficiencies, +2 bonuses on several saves, a host of class-skills, and the capability for some self study/improvement. That different classes take a different amount of this pre-adventure training is acknowledged in the starting age table for the classes. The self-training idea is explicitly mentioned in the Wizard section on spell-books. Multi-classing in RAW just hands the character a huge platter of feat-equivalent powers in addition to a level's worth of ability - things that a character advancing in-class doesn't get.
So what's the over-riding opinion out there for multiclassing? Give it away or make him earn it?
I'd like the rules for multi-classing to:
* Give the really simple formulas that make the BAB and saves make sense (why do Sorc+Wiz attack worse than just Sorc 2?, why the extra +2s on saves?). So each class has either a 1/2-per level or 1/3-level in each save with non-stackable +2 bonuses at first level, and gets a BAB per level of either 1/2, 3/4, or 1.
* Require some in-game reason why the multi-classing made sense. If they had a point or two in survival and intimidate, already had a bit of berzerker personality, and mentioned a few sessions before advancement time that they were working towards that, then I'd be inclined to let it slide without some outside or down-time training (it is just a game). Similarly, if no one else at the table strongly objected, I'd probably cave and let them do it if they said - "You know, if I'd thought about it I would have put those skill points back when in intimidate and survival to start barbarizing myself. Can we rewrite space-time as if I had?" If they have essentially nothing in common with a Barbarian in terms of background or class skills, and want to just pick it up with no training or story beyond wanting some prestige class... then I have a hard time imagining it's for role-playing reasons.
* Limit the number of class-skills, armor/weapon proficiencies, and +2 save bonuses (not stacking) they get from the new class. Maybe 3 or 5 per level of that class taken? Same for prestige classes.
Last edited: