I would be willing to bet someone has done it....just not going to publish it yet...there are too many breeders in th U.S. that have them in their collection, but not every breeder will share info on the internet.....as soon as some shows a pic of them on eggs you will see them pop up from every direction...
A lot of your "OLD SCHOOL" breeders still do a lot in secret and not willing to share because of what it does to the market price. There has never ever been a female anything that cant reproduce so is the "Desert female" one of the wonders of the world....nope...just needs to be treated a little different than the normal Ball Python.
I just picked up a 650g female yestrday and looking for more at the right price because I know proof is coming soon and the information needed to have them reproduce.
Travis
Lair of Dragons