Don't forget your driving licence (photo part), documentation for bike, not photocopies, especialy for France and Switzerland, enough money for road tax, Switzerland, make sure your pipes ar'nt to loud, you guessed Switzerland. Don't think there a motorist friendly country.
I know you got your breakdown cover with one of the big two, but something to consider in the future. I have mine thru my insurance broker, £75 a year car and bike, european and domestic, used them for the car, no hassle ringing up, 20 min wait for recovery, and took me and car right to my front door. Certainly beats the inquizition I always got from the RAC. A few more words of advice make sure you have a CE approved reflective jacket (waistcoat). Easily accessible, i.e on top of your luggage, don't bury it under all your gear, as it could result in an on the spot fine, especialy in France or Portugal and Spain, the Spanish police are targeting British registered vehicles with on the spot fines. Also the French have new speed cameras fitted into the fairings of Pan European Hondas, and in the grills of cars, at the moment only Audis, and the vehicles don't need to be stationary, to catch anyone. At the moment the radar units are only working on the E40 and E411 autoroutes, but will spread to other routes by mid summer, they also have a large number of static ones installed,be aware of the radars hidden in the crash barriers, usually about 1km after passing a Toll Booth. Enjoy your trip.