Talk with Ben Renick. Hes got many Adult female deserts and had a few Die due to Egg Binding, which is all to common in desert females. And hes yet to get a viable clutch from them.
Deserts been out 10+ years now, plenty of time to know if their fertile or not. Every other mutation has evolved beyond expectation in 10 years, but the Desert is the exception why.
Ill never own one ever as its a waste of time and money proving out what will never be.