One of my buddies had a breeder size gene packed male that he paid a LOT of money for that went off food for long time. Tried everything with rat sizes, hides, mice you name it.. Took a SF when he got his hands on one.. I don't know anything about the little suckers other than they are mean as sin and some states they are illegal to own/breed. Knock on wood, live mice have always broke my strikers. If you have someone you can get to within a decent drive I would probably say utilize them on an as needed basis. I agree with number 3 though. The chances of people buying an animal that isn't over the moon who only take soft furs is low. If you pump out some 3-4 gene animals that are rare that bigger breeders want than I would say the chances are higher. Hobby breeders and pet owners probably won't touch it.