I feel that question is far too upfront for an interview, definitely an initial interview anyways. You're not asking where they think you could fit, you've phrased it as where do I fit?. It's an interview, not a job offer.
Maybe I didn't word it perfectly, but it is partially out of a desire to know how they think I would benefit the company. Am I just another redundant cog in the machine, or am I really going to play a key role? I guess it is a good point to still make it in hypothetical language.