Well, I stayed in Switzerland last July and I have some interesting news to update.
OrangeClick - operator web-based - now is available at an InterDiscount shop or at an Orange Center. The option SMS (0.10 CHF instead 0.25) is free but NOT automatic, so you have to set it in your account.
Yallo has the best intertional prices. Now they have only 1 price: 0.39CHF for national and european calls. Great! Then 0.05 CHF / min. between Yallo customers. The only pity is that they don't accept incoming MNP.
Then a strange thing... in Lausanne and Vevey I "lost" the coverage of In&Phone, maybe they were testing something... but I didn't see their coverage from 10th to 18th July... really strange :P
Other news: Switzerland has another MVNO. <span style='color:red'>
MobileZone</span> (
http://www.mobilezonenet.ch )