No one can know if a chick will be show quality or pet quality, no matter how spectacular its lineage, Tim. Even if you start with perfect or near perfect parents, only a handful of the progeny ever are truly show quality.
You know, I asked a poultry judge if he'd ever sees any Delawares at shows. He said it was very rare to see them, and even more rare to see one who was truly spectacular. Janet Holtman's birds are probably the best stock in the country, though she had to take a hiatus from breeding them for a bit. Hope she can pick up the torch again soon! Even then, you all have seen some of Isaac's boys that were either lightly marked or too solidly marked in the hackles. That's just the nature of breeding, all the culls. Even the culls are handsome, though, IMO.