I think one’s personality is reflected in the choices one makes, sure — I don’t think there are too many actual Spocks around that are solely driven by rationality (which itself would be a trait I suppose).
But I don’t think marketing companies have a line on actually matching up personality and buying patterns. There is too much to the mind. (I don’t even think psychology in general has a good grip on predicting a person’s behavior, for that matter..)
However, if marketing companies had a report stating hybrid owners are more likely the be elitist, insufferably moralistic, stuck-up little prigs, I’d start thinking they are on to something…





