but you can collusion Spirits Within though and it is awesome.
My wife has a warrior and I have paladin; we play and test what the two can do together. The two working together is unreal. Threat generation is threw the roof, damage reduction is increased, greater adaptability, greater survivability, and less need for a second WHM. Few parties really lets us try and experiment this to the fullest, but so far I like how well they combo.
I know people think I'm crazy for experimenting, but I love problem solving. I also think most content, right now, doesn't require two WHMs.