Pat White has thrown plenty of footballs in his life. It helps that he has two fully functioning arms.
White is a better QB than Ainge and could also help out in other areas- wideout, special teams, single wing tailback. Drafting him before the 3rd round would be dicey, though.
I loved watching White play his college ball. That being said, I wouldn't want to be the guy responsible for drafting him any earlier than the 4th round. He has mad skills, but I'm pretty sure he needs to get at least a look at QB before someone tries to make a Randel-El out of him.