I had an Olex daughter and have seen some other daughters, sons. Extreme drives in the dogs I saw. That drive was in obedience & in protection. The female I had could be almost exhausting to work, needed to stay a step ahead of her because she was always on the edge of losing control with her-she wanted to work, work..would overload for the ball in obedience, did better for food. Protection had nice aggression, strong dog. The other dogs I've seen were similar. He's produced some top dogs in the sport.