I'm going to get the Halbtax Visa (although I expect to be rejected initially as I've only been in Switzerland two weeks and have no credit history here) - this has no annual fee. Well, apart from the 125Fr cost of the Halbtax, obviously!

Being from the UK I have a Nationwide account, and UK credit cards. My Nationwide cashcard and Visa don't charge any fees for using in Europe (inc. Switzerland) so at the moment I'm using those.

Once my Post Finance bank account is open, and I finally get paid in my new job, I'll transfer money from there to the Nationwide. If I understand correctly, it's very cheap or even free to transfer money from Post Finance to another European account provided I use a certain method (not sure yet - something to do with IBAN).