I do not wear a clergy shirt, but rather a black (or grey on Pascha) cassock with pectoral cross.

Yeah, I wear it in public, and I get less notice than any kilt wearer. No one mistakes me for anything but an Orthodox Christian priest (though one Jewish family asked me if I was a rabbi - they said that the cross threw them off! - but I think they were self-made Levitical protestants pretending to be Jewish, not actual Jews. Hey, my wife is a Jewish Christian, so she has a good detector of such things)

With my beard, you wouldn't see the collar anyway.

Orthodox nuns are also referred to as mother, if professed, or sister if not.

Orthodox Chrisitanity has never had priestesses or pastorettes, so no worries there.