I've seen plenty half crosses run & owned a couple of decent ones.My opinion is there a dog for a job.The half cross doesn't turn all that well,does suffer with injurys,stamina's ok as long as you give them a breather,good jaw power & gameness,not that fast if its a long run,eat anything,clean& quiet,eager to please,hard as nails,great with people but can be a bit touchy with other dogs(sometimes).All in all there good at what they were originally bred for.Think you have to do what you do with any cross,ie quarry,type of land you run,etc etc & see if they suit.Some people talk