I've known some Mensa members. They tend to be people with high-IQs, but whose life accomplishments don't manage to keep pace. High-IQ people who accomplish things generally manage to have no problems associating with other sharp people.
I knew four mensa people — one who became a warehouse manager, one who became a paralegal and never bothered to finish college, one who was the secretary of the president of the company (who couldn’t beat her on the test), and one who became a mid-level manager in a human resources department.