Different axanthic line combos?

Since some/most/all axanthic lines are not compatible with each other, when you breed say; a visual VPI to a visual TSK, you would produce double hets am I right?

Well since you would get double hets, has anybody ever combined 2 axanthic lines? Or would it be near impossible to tell because they all take away the yellow pigment?

I came across an old axanthic thread and this crossed my mind.

I've wondered that same thing in regard to making "one" axanthic line by producing an axanthic that is both lines.

As for the lines....Joliff and VPI have been proven to not be compatible. But unless something has turned up recently I believe it hasn't been proven that VPI and TSK are or aren't compatible.

I know there are a few breeders that believe the two to be compatible but haven't gotten a breeding of the two.

I'd love to throw the two together and see myself. :)