if its heart racing full on action,100% drive and 100% dedication to get to its quarry that you want then go for it,but forget the retrieving and obedience nonsense as it would be VERY difficult to teach the ex track dogs anything,but allso be prepared for injuries as they are not as hardy as lurchers,be carefull with livestock aswell.
they are exciting to watch tho everything done at 100 mph,blink and you will miss the action