You're putting to much emphasis on the breed on not the dogs themselves. There's BMC's that hunt exactly same as the catahoulas, whether short range, long range, cold nosed, rough, straight catch, or whatever else. They'll always be dogs from all breeds that do it the same way, you just have to decide what you want and look for a dog that hunts that way. The dog could be Purple with pink stripes, but if he does what you want, that's what matters.
Listen to what he says. If more people thought like this there would be a lot less culls out there it seems.