As an interviewer if I was ever asked a whiteboarding question it would be an instant rejection, regardless of your performance in the interview. It shows a lack of social awareness and I wouldn't be comfortable working with you on my team.
Can you explain more why it would indicate a lack of social awareness? If I am interviewing at a company, I want to know the kind of people I'm going to be working with/for. If the person who does all of the technical interviews lacks technical ability, then what does that say about the people he/she hired? If they think a solution to a whiteboard problem is essential, how can they judge a particularly creative solution if they don't have intense technical experience above an beyond the people they are interviewing?
That's an interesting way of looking at it. I've interviewed plenty of candidates in the past, and if someone I was interviewing asked me a whiteboard question when I asked 'do you have any questions for me?', I'd be amused, pleasantly surprised, and impressed.
And I'd probably be more likely to want to hire them, too! Asking their interviewer a technical question would show me that the candidate cares about the quality of his or her future co-workers.
