The Swiss are still rather local in their loyalties, however. Their "multiculturalism" is definitely NOT the salad bowl approach we see now in the United States, but more like a main course with several items: the French mingle mainly with the French, the Germans with the Germans, the Italians with the Italians, the Romansch with the Romansch.
It should also be pointed out that the four afforementioned cultures are fairly microdiacritic. Asian, Muslim, African, etc. immigrants are definitely macrodiactitic to the native Swiss population.
Haven't been for about 12 years, it used to be paradise on earth, along with the Salzkammergut area of Austria. I did see one piece of graffiti in Zurich last time, hope it wasn't a harbinger. . .
Look, wealthy Swiss have been bringing in house servants from all over ever since they figured out how to make money off goats and waterfalls.