Just a small off-topic comment: the Swiss Franc is not as stable as you think. For example, it used to be pegged (as in, CHF 1 was supposed to be worth EUR 1.2), but in recent history the Swiss Central Bank decided to unpeg the CHF to EUR, seemingly out of the blue.
Yes... But since we're off-topic, running with the thread for a bit, the kind of upset caused by the euro/franc un-peg is entirely inside the boundaries of "stable" in the context of the kind of country for which just adopting another nations currency is an attractive choice.