Regarding a gifted leader vs. academically gifted person, I did always wonder if the boy I thought of as possibly a gifted leader, and his mom, were in that 'ideal iq' range of approx 120...gifted but on the cusp, and I further wondered if part of their draw/approachability (sp?) was that they were fairly self-effacing. They were certainly both bright.
Possibly perfectly positioned to bridge between the mg/eg folks and the nd folks...?