I have friends who are based in Geneva for work. A lot of people live just over the border in France and commute on a daily basis, it would appear to be cheaper in terms of property prices/rent as well as general living costs.

The £/CHF isn't a great exchange rate so prices may appear high if you're paid in Sterling.

Tax wise you'd have to seek specialist advise, as each Canton sets out's own rate. Unless of course your with the UN then you don't pay anything or at least next to nothing.

I've been tempted by a few offers there and would do it for quality of life but cost was against us