It could work but:
1. in the
cash out year
you can't stay in CH for more than 29 days otherwise you'll be considered tax resident. (this assuming you don't have any other ties in CH).
2. regardless of point 1 i have the feeling that the chocolate lovers will try to tax you anyway unless you demonstrate that for that year you were tax resident somewhere else.
3. i don't know if CH will be fine with the fact that you are losing CH
tax residency every other year. In a way this could demonstrate that you don't have the intention to permanently establish your usual abode in Switzerland but....remeber that it's the country where
you are not allowed to hang up laundry outside on Sundays so you'll never know WTF they have in their mind.