Can mountain and commuter bikes live together peacefully in the same garage? They do at Gary Fisher’s house. One of Marin County’s original gangster progenitors of mountain bikes (he and business partner Charlie Kelly coined the term as the name of their bike company, MountainBikes, in 1979), Fisher was racing competitively from the age of 12 in cyclocross and on and off-road events. He now works in design and marketing for his eponymous label at Trek. But a funny thing happened in 2007….