@ossobuco,
when i spent a year in vienna many(!!!!!!) moons ago , the traditional greeting was SERVUS (from the latin "servus" = servant , slave) , meaning "at your service , ready to help nice to see you and good bye ".
when we visited vienna for three weeks in 2001 the younger people were using "chiao" all the time , but we were still greeting people with "servus" - the older ones still understood ! <GRIN>
hbg
that's the vienna i remembered - it no longer exists !