Just to be sure . You are looking for currency hedged alternatives or just CHF denominated ETFs? They are two different things.
If an ETF is just denominated in CHF is not going to change anything.
But if an ETF is hedged to CHF then it would improve or reduce the overall returns. But it’s difficult to know which way the strategy of hedging would work. Someone asked similar question sometime back. You can read the postHere