I was just thinking the same thing. Schizotypal PD does look an awful lot like Asperger's, and is another one that may actually be a variation on the same thing. Schizotypal PD is based on the symptom of feeling different and out of place and not belonging, with the idea that feeling that different would cause social difficulties, while AS would be thought to be the other way around - lacking the skills and ability to fit in, one would feel kike they must be from another planet. But it sounds an awful lot like a chicken and the egg question. Which came first?