As far as I know:
-It depends where you go after CH. EU and some other countrise have agreement with CH, so that the money is transferred to your dest. country.
- Until 2 years ago you could easier cash it out but rules are changed.
-To countires without agreement with CH, you can cash it after some months.
- If you stay more than 10 years in CH, then you can get your pension (or part of it) via CH, even living in another country.

Correct me if I am wrong.