Good luck smuggling it in:
Swiss importation limits:
Butter and cream – 1 litre or kg; tax after that is CHF16/kg
Milk and other dairy products – 5 litres or kg; tax after that is CHF3/kg
Sbrinz is right, the Kerrygold you get in Germany tastes different to the kerrygold you get in Ireland. It either has no salt or so little that you cannot taste it. I personally prefer non salted butter so I am not complaining!
You can buy salted butter everywhere - even in Migros
the Kerrygold you get in Germany is a product prepared for the German market