The thing is those breeds are very different,you just can't know what way it'll throw surely?
I've seen one try to do it's owner in for throwing a tennis ball,it had the best upbringing any dog could have,as well as few other unstable mutts.
There are breeds of dog that are finely honed and have been bred for 100's of years to protect people.
I agree with you neems.he said he ran the whole litter on picked 1 and culled the rest and he didn't want any of them going to anyone.