My boy is split pied and I have the same problem as Butterfly. Need a hen for him. They are a beatiful little bird and the pied seems to stay pretty true.
LML
Stays true once they are mature but cocks will have pied markings overridden by red on the head neck & upper chest as they mature. Pied markings usually only show on the lower half of the torso, wing flights & tail of mature males. Hens can look heavier pied because the brown doesn't override white as she matures & hence show more obvious pied markings on the top half as well as below.