I believe it's best to just be honest about it. If you feel the need to disclose you have Schizoid Personality Disorder, just do it. The good will outweigh the bad. There's no need to feel you're in a straitjacket over it and you can't say anything about it.
Yes, it's a limiting personality disorder....we might be in a straitjacket with our career prospects or career paths with this disorder, but it's not like it's a crime or anything. Heck...I don't even have any career prospects or career paths over having this Disorder...I just have a "job" with this thing...it's a paycheck.
We need to educate others about it so that society will be more adaptive to us and so we can better adapt to it in return. Compassion exists...it is there for us, too. We haven't done anything wrong...it's just our personality quirks at work here....we'll have those quirks wherever we go. We can be in denial of ourselves and ashamed or we can actually accept ourselves.