Savoyard is considered a slur to them, they prefer Savoisien.
All the people I know say Savoyard without any negative connotation. It's the traditional demonym and there's no reason to be ashamed of it. "Savoisien" sounds like hideous newspeak.
I believe the 2-3 Savoy departments have in their schools one hour of Arpitan per week.
That's very good to know. By the "third" Savoy department I assume you mean Ain? It used to be part of Savoy way back in the day, but I don't think much of that culture survived.