We all like type A's on our side. Someone who carries our own opinions with a little extra swagger. Someone who can propose a strategy, or suggest a solution or give advice with blazing bravado.
Especially once they develop a loyal following.
And are paid well to do it.
Would you prefer a champion like Wharton professor Scott Armstrong who's willing to put up, say $20,000 to demonstrate his certainty about global warming -- or one who declines the challenge -- especially if that amounts to about 10-15 minutes of his normal speaking fees?
Bottom line: pick good champions.