I know about that crooked toe isssue. The one's that I had, had that same issue, along with discolored toes. I sold them cheap to a lady that wanted them to eat bug's, and told her that they were a mixed breed. That way if she changed her mind about breeding them, she wouldn't be trying to sell...
I have no idea as I've never tried to eat the comb. I also re-homed the White Breese that I had when I decided to go with the Naked Neck's instead. My white Naked Neck's have some of the Breese mixed into them. The White was dominant.