Well, it is true that nine banded armadillo's can carry the bacteria that causes Hansens Disease. No cases of transmission from animal to human have ever been documented. In fact is is extremly rare for humans to transmit it from one to another. The bactirium is very weak, and is easily erradicated by the immune system of 95% of normal humans. The 5 percent who are succeptable to the bacterium in theory can usually only be infected by prolonged direct exposure to an active carrier.
As for the skin, the thick carapace is very difficult to preserve properly and is so thick that even if properly dried, it would be very difficult to wrap around a tube and cast. The thinner skin of the legs, neck and head can be tanned and probably cast, but is really freakin hard to remove in large pieces. DAMHIKT