Apart from the fact that we're still missing a serious study of pair programming (isolated from other Agile hooplah), it's also a false dichotomy. Isolated damsel programmer in the ivory cubicle vs. paired mind meld.

I would say "Pair programming? Yo, Obie, I already gotta pair!" in my best Andrew Dice Clay manner -- but with a German accent, my best Andrew Dice Clay manner is rather abysmal...