OK, my research is done. If you have aftermarket DRLs fitted that are LEDs (so bright like anyone earning 120k+), they must TURN OFF when you put the car lights on. This is the Euro norm to which Switzerland will surely be complying.

http://www.astra.admin.ch/themen/ver...x.html?lang=de gives some information. Paket 2 in the downloadable Via sicura Faktenblatt states that the changes are planned for 2014. I assume this means that they're set in stone.....

And it says just this:
Obligatorisches Fahren mit Licht am Tag: Motorfahrzeuge müssen künftig auch tagsüber mit Licht fahren.