hey i have some switzerland kiteboard info on my experience trying to kitesurf here on my blog:
www.gabeskitelife.blogspot.com
i tried kitesurfing recently up in silvaplana, but it was too cold with not enough wind.
the kiteboarding beach look awesome though and i spotted 2 kitesurf / windsurf centers.
from my research, i guess it can get pretty windy, maybe good for something like a 10m best nemesis or cabrinha