He also states the ivory ghost isn't even proven to be a ghost.
In the other thread, they claim to have success breeding this line and standard line, which includes orange butterscotch yellow and many other lines. Which I don't see why this is being treated as a new morph.
However reading corey's record there, he makes it sound like he has a line of green ghost that is not compatible with the normal hypos. I have read of people proving green and normal hypos compatible so I'd be interested in what he has to say about his experience, possibly different morphs being called the same thing? I'll have to email him when I get home.