I'm too sleepy to look it up now but part of the range of the USA ones in the 5Ghz spectrum (used by N) is outside the range allowed in switzerland. If you are just using B or G or only the 2.4 part of N you will be fine, and you can still use the 5Ghz band, just have to research which channels are allowed.
And even though I don't recommend trying it.. not all the wall warts / things that say "110v only" are actually 110 only. My PS3 for example says 110 only and runs just fine on swiss power. Also my cordless phone wall adaptors say they are only for 110 but I plugged in and tested and sure enough they work fine despite the higher voltage. Don't blame me though if you fry your adaptor, electronics, or blow the fuses/circuit breakers in your apartment.