I would also have questions about their excitability, will they be able to calm down after the catch and not grab a bay dog or a person. If they can do that it goes a long way towards being a good catch dog.
have had no issues with any agro at all. even with my other ones in yrs past I used in a pen to start pups. Ill keep yall updated on my Mal/Dutch CD experiment. They defiantly have the drive, speed, agility and endurance. I to wonder about the durability but I only hunt 2 or 3 times a month so probably wont matter much with my schedule. So far so good, he defiantly caught solid on the ear his first chance/time he saw a pig. He had only seen shoats before and he would kill/gut them but not catch them, he was on the ear like a cd should be on the first one he saw over 100lbs