A lot of good dogs will turn there hand to most stuff, but you'd never get a dog that excels at all lurcher work. My old saluki cross can catch 3/3 hares and I take him foxing with the terriers catching bolters....but he'd never stick his head down a hole so you carnt say he excels at terrier work! Likewise, dogs that do, that I've seen, you couldn't take on a days coursing, which is different to catching the odd hare.