NO, Geese don't like ducks and ducks love to be with geese, let that sink in. If you are combo hunting ducks and geese, use goose decoys. You can add ducks but put them off tot he side and away from anywhere the geese would fly in from and land. You don't even need duck decoys with goose decoys and can still call to them and they will still respond.
Done this several times and used two groups of goose decoys and ducks off the side of one of them. Geese and ducks will both land in the hole between the two goose flocks and ducks will then swim to the duck decoys, but not land with them when geese are around.
Ducks are erratic when flying and geese do not like flying over them, don't like Mojo's. I've see flying ducks cut off geese and make them stop working the area and want to leave.