There has been some headway made on them. I know a few people who have had their's going for years - one of which had them for 5 years before selling, and managed to get a cbb clutch from them at one point (poor hatch rate). Like most snakes of this nature, the real challenge is getting ones that are healthy enough to make the transition. I have no doubt that there will be more captive breedings occurring in the near future, so hopefully the offspring won't be as fragile and prone to stress. Right now I'm working with four females, which were in captivity for a month before being sent from Germany to the US. I've only had them for a few days, so it's a bit early to tell how they'll hold up. I am following the direction given by the only known captive breeder, though, so hopefully they'll do well.