Unfortunately cannot say what vengence production capability was because he had zero ability to do so. He may have been ability and production but being sterile is a raw deal with such a capable hound. His bro choko has put some nice ones out there. Always have liked the look and what I've seen and heard from this stuff. And on a side note jack. They took a daughter of that gr CH littermate of ponchobacks opponent to a son of silverback. An interesting combo of solid hounds.