Hello PerkyP, I had the same dilema and decided to go with the getting my bike licence in Switzerland option. Like you I already have the Swiss driving licence and my Lernfahrausweis (the lerner permit required to ride a Motorbike as a lerner in Switzerland.) Not all details are clear to me (yet!) But I already have a bike and I'm riding around on it-I also have a meeting with a Motorcycle teacher tomorrow, so I will you know how that goes if you like.

My German is OK-I can just about scrape by with chucking the odd English word in every now and again and it seems to work. I tried speaking English with this teacher, but it didn't work out too well and I'm starting to wonder if my German is better than his English (that would be a first!) Anyway, good luck man-let me know if I can help, or even better if you get a bike, maybe we could head out for a blast!?
Martin.