No. Gonna stop you right there. Absolutely not. No. Nuh-uh. No. Never. NEVER EVER DO THIS. If there's one thing I can teach people (after "diversify, buy index funds, rebalance, hold for a few decades"), it's "foreign currency loans are a terrible idea".
And that's because foreign currency loans inevitably blow up. Swiss-franc loans, in particular, have been blowing people up since at least the 1980s. In 2008, I had friends who took out SGD mortgages on their Australian properties, and in the week when Lehman blew up and AUD tanked 20% in a week and everyone got fired, these people got calls from the bank telling them "if you don't post a quarter million dollars of extra collateral this week we're taking your house". It wasn't great!
The tradeoff for the lower interest rate on CHF or JPY loans is that you have crash risk - whenever there's some sort of crisis, CHF and JPY (especially CHF) tend to rocket higher, because everyone liquidates their bets on higher-yielding currencies and rushes into those "safe-haven" currencies—which means your loan's notional, and your interest payments, suddenly get a lot larger right when you can't afford it.