My personal opinion: They had a good start, but it's still a bit unclear how they will make money since the app is free. There are multiple investors that will want to see a return on investment someday. Also, there are again some privacy tradeoffs to improve usability, e.g. the fact that a list of all your conversation partners is stored on the server until you delete your account. Finally, the servers run on Amazon (Ireland) and all development happens in the EU, so I doubt that Swiss jurisdiction is really applicable. But I'm biased :)