Not well. First problem is that Campag is a very dyed in the wool road purist manufacturer, so cassette options that fit the spline pattern are very limited - as far as I know there are no MTB-sized cassettes built with a Campag spline.
Second problem is that for some completely illogical reason they use unequal sprocket spacings through the cassette; I think three different spacings, at specific points in the block. 11-sp. is close enough to tune tolerably, but not perfectly with either Shimano or SRAM shifter & derailleur, but 10-sp. really doesn't work well because the cassette is also a decent bit wider overall.