I'm sure he has two, c&b. They could have quite a threesome if they met a mare who was hot to trot. (Stable relationships are best, according to a gallop poll.)
Actually Graham I got a Vallejo book when I was 13! Crazy stuff, but very cool. Then I discovered I have little artistic ability. Oh well. Wish I still had the book though, they are spendy to replace IF I could find it
Assuming they're having sex, that's a really weird place for the man-pegasus' penis to be located.