I dunno, maybe I'm biased because he's my cousin, but I don't really think so.
In fact, I think it's a plus factor; I would show this to people as part of my breeding prospectus: "Look! See what's in my gene pool? We could have a little one of these!"
Ok, I just totally creeped myself out with the concept of a breeding prospectus. Why do I think of these things?!?
Then again, they should probably be mandatory - an equivalent of the adoption procedure. It wouldn't even need to be official:
"Wow, I had no idea that ran in your family. And look at your mental acuity score! Look, I'm sorry for leading you on, I don't know what I was thinking flirting with you without us trading briefs first, but I'm not getting within ten feet of you... so, uh, could you toss me the remote, please?"
I'm a genius; a creepy genius.