So after quite a lot of evaluating and contradicting, I finally gave in and bought an Interrail Global Pass for two weeks consecutive. This means, I could ride trains every day using all the Interrail member companies for two weeks. There are plenty of different types of passes: single country, multiple days in a definite time span, etc. The most common thing they have, is that they are not valid in your country of residence, except for going out and coming back in once (only for some passes). I chose a global pass because I wanted to cover multiple countries and wanted to cover the way out of and back into Switzerland.