As I mentioned before, I had ordered the Ricoh TH-1 Hard Case to protect my Theta S camera. The case arrived today. It is well-made of optical quality plastic and the camera fits snugly inside.
The case will protect the camera against rain, etc. and a certain degree of rough handling. However, one must guard against scratching the surface, as you are meant to be able to take photographs through the clear case. It looks like it would be worth getting an ESDDI Thick Protective Neoprene Lens Pouch for it.
I continue to be very happy with the camera, and I look forward to taking many new photo spheres.