I have just come across another webcam that has been installed on a Swiss loco.
This time it is on a loco belonging to the metre gauge Montreux Oberland Bernois (MOB) railway. The line is very scenic and runs between Montreux (on Lake Geneva) and Zweisimmen (in the Bernese Oberland) passing through the famous ski resort of Gstaad.
IMHO It is one of the best quality railway webcams that I have seen.
http://www.bildersammlung.ch/bahn-webcam-goldenpass/webcam.php