I've done it ok (not Campag mind you). You might have some chain rub issues if you are in an inner ring/small sprocket combo but otherwise it seems fine, a bit noisier maybe when the chainline is not centred but not enough to make me want to change it.
I've got nine speed Chorus on one of my bikes. I'd quite like a compact chainset on it, how feasible would it be to put the new Centaur cranks on it ?
Issues around 9 speed chain on 11 speed rings ? Front mech shifting issues ?