Sorry, but there is nothing new here. Skype has been providing this service for years now. It could either be achieved by buying a "Skype number" in the countr

Sorry, but there is nothing new here. Skype has been providing this service for years now. It could either be achieved by buying a "Skype number" in the country you are visiting, or by using "Skype To Go". And you don't have to dual-sim, you can route numbers wherever you want.