I am not sure, but if I had to guess why it's not worked with more is because of people assuming it was just paradox and not genetically inheritable, especially with the people early on selling fake ones. I think it's a really cool morph. I haven't heard anything bad about it as far as causing health issues or something of that nature. If breeder's circle is still working with it all this time later, I'd imagine something like that would have been disclosed by now if it were causing health issues.