I have a drug-induced movement disorder that makes me very self-conscious but some of the involunary movements (which include facial tic-type movements) are suppressible most of the time, so not a lot of my friends have really seen me with them, just my close family. Friends that I have told about them always say they don't notice, and have been very kind and accepting/non-judgemental about them.
I'm probably going to not like the answers here, but be honest - if you met or passed by someone in the street with a movement disorder who had facial tics etc and you didn't know them, what would you really think? Would you notice much and not say anything? Or would you ask why they were doing them and find it odd?
My psychologist says most people are too wrapped up in themselves to notice things about others, and if they do notice and pass judgement, they are not worth knowing.
She is absolutely right, but it doesn't stop me from being overly aware of them or feeling self conscious. 