Im not discrediting the warhorse, or the breeder, or you... but you could put together any combination of traits and it will look like something "pure" breed. If you change that straight comb to pea comb, the owner could claim Sid Taylor or black Roundhead.I got him because from all the research I had done a proper black and or dark mahogany hackled Warhorse was supposed too be straight comb I'm real happy with the bird.
All my birds have small diameter roost and plenty of hay so shouldn't have an issue knock on wood.