i know few lads use lads that use line bred (bull,collie,grey) but they do top up the bull in there mix, fair amount so dont loose the bull tenacity. These are good lurchers that pre ban were good fox+deer dogs, but straight ( colliex grey x bull x grey) could be hit+miss temp, you might get the softer temp of the collie come through .!!
I've seen a couple of good ones some with more collie than bull and some more bull than collie one thing they had in common is they were bred out of dogs doing the job, the one here is 1/2 beardie collie x 3/8 bull but you'd swear he was just bea