Give Stu a call at RedTac, He made a scope cover for my Kowa 82 and while it isn't form fitting it serves it's purpose well. Mine is more like a rifle scope cover only larger & longer.
I just had a customer send me his to make one of my cases for it.
The design should be complete this week and the prototype will be complete in about two weeks.
My cases are constructed of two layers or 1000D Cordura with thin foam in between them.
The cases are fitted and extremely rugged.
I currently offer Multicam, Coyote Brown, and Woodland.
Here are some photos of my products so that you can get a better idea of their construction.
If you like, shoot me a PM and I will be sure to update you on the status as the Zeiss Diascope model is developed.