Why should I care that the company is Swiss? The point of client-side encryption is that I don't need to worry about who's hosting my data or what jurisdiction they're under.
See, for example, Hushmail, which has no option but to cooperate with correctly formed legal documents. This means that they use the passphrase (which they can capture within a short time) of the non-java-applet version of their software, or they serve a modified applet.
Being in a different jurisdiction provides a small amount of protection.