Two other guides for you

Gilles has been riding forever, starting as a x-country man. Living above Montreux, could he ignore the Rochers-de-Naye ? Some of the trails have been opened by him and he knows the mountain better than his pocket. As a learned engineering draughtsman it's no wonder he's getting along with all kind of maps. If I'm not available, he's your man for guiding you, especially in Montreux, as long as you get along in basic french. No reason to stop riding in winter, he just switches to skis or the snowboard.
GillesEtGuy
Gilles & Guy
Guy is another early day competitor. Riding the bike is his life. He is a certified bike mechanic, probably one of the best out there. He soon got into being sponsored and downhilling on the national circuit at top level before he spent 5 years as a bike guide and bike mechanic on the Canarian Islands. If you ever wanted to discover exotic riding though cactus and lava while others are freezin' it off during winter, contact him for an absolute freeride trip to Tenerife. Otherwise, when he's not working at the shop, he may agree to show you all the good trails around. His all season handle bar addiction braught him to defy gravity with the snowscoot in winter, a mix of BMX bike and a snowboard.