"The rarer D4 variant seems to give the higher performance or desire has been associated with things like novelty seeking, a sort of extroverted personality, as well as attention deficit in children and adolescents."
Always the way - a minority variant becomes 'wrong' instead of just different. Like 'attention deficit' - doesn't that just mean you don't want to sit still when you are a kid, you want to go and run about? It's not wrong, it's just less common, like being left handed.
The gene-to-sex-drive correlation was nearly identical in males and females, although Ebstein noted for self-reports of "how horny you are," men score higher than women.
Anyway, do you think this fits in with you? I'd say I am quite a D4-type personality. It's unclear why having fewer Dopamine-receptors is associated with this constellation of behaviours, but I find it plausible.
Dopamine is interesting stuff. Parkinsons is a dopamine receptor mess-up isn't it? (My mum has that) and Awakenings is an interesting book about the 50-year brain damage of people with serious dopamine deficiency problems who were at the opposite end of the spectrum from the over-active D4s - they could neither move nor speak.