I even managed to make the setup work without telerising (except for setup)!
DRM protected channels won't work without Telerising (SD streams are possible without HDCP enforcement, there's no stream at all with HDCP enforced by the provider). At this moment, the German RTL channels are affected by these restrictions in Switzerland, and most of the private channels use DRM via Zattoo DE/AT. In case someone would like to try this to watch German channels.