Why go so far? The Germans do not really learn Züritüütsch when living in Zürich. They think the Swiss should speak German.
Switzerland has four national languages: French, German, Italian and Romansh.
German is spoken by about 64% of the population, French by about 23%, and Italian by about 8%. Romansh is spoken by less than 1% of the total population.
The most notable linguistic fact about German-speaking Switzerland is the use of dialect for spoken communication and standard German for written communication.
I don't speak Bavarian or Swabian either when in Bavaria or Swabia. But at least, the German Swiss TV has German subtitles for speeches in dialect.