Let me put it this way...
My PFRPG game is a 4 person gestalt game. We have a Bard//Battledancer (me), a Barbarian//Crusader, an Artificer//Duskblade, and a Ranger//undecided (but not core class).
Other than generic changes, like changing HD to match BAB (ie, Battledancer gets d10 HD for being...