Fear of fly by wire.
Once we are over the fear of fly by wire it is quite apparent that the Airbus family are just another aeroplane that will do anything you want until you reach a protection and then it just stops you hurting youself and 300 others.
Having said that if you need to do a side slip that is not assosiated with a cross wind landing you should maybe look at an orbit of a go-around. It is not usual to side-slip transport aircraft.