Ralph Davis has bred them together for a couple of years in a row now, to date, all of the eggs have gone bad.
If I remember correctly, he suspects it's the female he's been using and this season is trying a different girl.
As far as them both being T- .... your guess is as good as anyone’s ... to the best of my knowledge a tyrosinase test has never been done on any type of albino ball python. It's all just assumed up to this point.
-adam