Cinema will open OBJ or FBX files, but neither will do a good job of transferring materials. The best you can hope for is image textures be mapped (somewhat) correctly, but there are no equals for material types that transfer.
What is the purpose of exporting to cinema? I am a long time cinema user, so I do have some experience with it. I will usually do setups and positioning of stuff in keyshot, and then export an fbx to cinema if I need to do any simulations or other detail 3d work such as running wires and cables. Then I'll export it back. The geometry usually doesn't have an issue moving back and forth. The scaling can take some getting used to, and the normals might need to be recalculated in keyshot but that seems to have gotten loads better in the later versions.
