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Everyone photography style is different and I have not used any of the equipment that the OP stated, but when I lived in Geneve Switzerland from 2008-2010 I brought the following equipment with me: D700, 24-70mm, 70-200mm VRI, two CPL and a tripod. At the time I was just started to get into photography and almost all of the pictures that I took there was with the 24-70mm. Yes it is heavy, but I found that lens to cover almost everything I wanted to capture, day or night, inside or outside.
The url below will take you to a gallery where I posted some of the pictures that I took while I lived there.
If you don't already have one do invest in a good portable camera bag. This last summer I went back for vacation and purchased a Tamrac 5426 bag and it worked out great. It held ( barely) a 24mm f1.4G, 50mm1.8G, 24-70mmF2.8G, D700 and a IPAD. It was perfect to use on outings as I would only take the Body and one or two lenses.
Also, if you plan on driving, DO NOT speed in and around major cities. Speeding tickets in Switzerland are expensive VERY EXPENSIVE.
Enjoy your trips, it is a fantastic place to visit.