Joined: Feb 2012
Posts: 19,381
Likes: 5,527
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Front road STI shifters and MtB cranks and ders are not going to play nice together most all the time. Granted with a double crank the mismatch is less of an issue but Shimano didn't intend them to be compatible so your experience might be a better or a worse one. Bike designers who worry about this stuff usually spec bar end levers due to the front's friction function.
But my question is why a double crank? Andy.