It's not conceivable to those of us who love TRUE purebred dogs because we don't want that blood or have reason to have that blood in our dogs. APBTs do not need catahola leopard dogs in their gene pool to make them better dogs. They are not a breed based on looks like the bullies are. I can see why some would say that Merle is ok in the bully world though because American bullies are known cross breeds so I personally don't really see a huge deal with a Merle Amercian Bully, since it is a newer breed and has several breeds crossed into it. Well, depended on the line, class, etc.
Merle does NOT naturally occur in the American Pit bull Terrier or American Staffordshire. If it were to pop up it would mean that the dog is not pure, papers were hung and should be culled from the breeding program.
"It's a nokalokapoopalotadoocanidragaleashalupus. It's a breed of mixed, strained money extorted
practically useless spin off of a once noble breed." --William Williamson