This is not answering the man's question.....
You are all correct but travel on Shimano road and MTB mechs is not the same.
Both are dialed to work well in MTB groups OR Road groups. I have to deal regularly with shop mechanics (I am tech support for Shimano Denmark) who can't get Road STIs to work with MTB mechs and vice versa. Shimano make a flat bar shifter for triple road mechs BECAUSE MTB shifters are not compatible.
Campag front mechs are virtually identical with Shimano road mechs. So the same is PROBABLY true. Have previously run Shimano road front mechs in Campag setups.
Completed: 94 Stumpjumper w. M733; ; 92 Dave Yates 731 ; 97 Parkpre Pro-Elite ; Pace RC200 F6 ; Pace RC300; 82 Gios Super Record ; 97-8 De Rosa Giro D´Italia; ; Banani SPX Track bike ; 89 Alan/Mavic Cross Bike ; 05 Focus Cross Team ; 90 Look MI-80 all-Mavic ; 12 Focus Izalco Team/custom build ; 11 Focus Thunder Custom build
Projects : , Brouwer all-Mavic
Stripped : Pace RC303
Gone : GT Karakoram
Stayed in the family: Kuota Kharma, 04 Stumpjumper FSR
Ceased to be : Dynatech MT3, killed by corroded seatstays.