Incorrect, read the link above, it works on my bike and many others.
OK, fine. Will generally not work w/o tweaking.
Once you're in the realm of inventive, hands-on tinkering, far more things are possible. If you're sufficiently stubborn it'd be easy enough to custom-cut a Shiftmate for whatever hybrid drivetrain you want.
Shimano 9 has a sprocket pitch of 4.35 mm, Shimano 8 has 4.80 mm. Campy 8 has 5.00 mm and Campy 9 has 4.55 mm. Too much difference for decent performance in stock configuration.