Its a bit like a 1st x bull x.
Bull x grey hound. . . . . most greyhounds are fast, but a lot of bulls are shit.
Collie x grey . . . . . most greys are fast, but f**k me most collies are mental weirdo c**ts who have no place in the hunting world.
Get the right one and the x would be mustard. And I suppose years ago maybe a lot more collies were the 'right' type.
Ive caught most stuff by accident with the collies, and watching them and how they react, you can see which ones suit breeding a runner, and most dont. Sure they kill stuff, but so would most dogs if in their favour