Gutbucket, the translucent sphere shown in the video is not a Schoeps product, but Schoeps has offered accessory spheres (40 mm outside diameter) for their pressure capsules for many years now. The MK 2 S is especially recommended for "Decca Tree"-style recording.
There is a set of Beethoven symphony CDs on the market in which some of the symphonies were recorded with three Neumann M 50 microphones and the rest with three Schoeps CMC 52 S microphones. If you don't already know which ones are which, it's hard to hear the difference even on a direct comparison--and if you didn't already know that two different sets of microphones were used, you wouldn't guess it. I say this as someone who has actually recorded with real M 50s, which are amazing microphones. They can maintain sonic focus at an almost unbelievable distance in a reverberant environment.
Below are a pair of quick photos of a KA 40 accessory sphere on an MK 2 S on a Colette cable. I've used this type of setup a few times for classical stereo recording. The spheres can also be placed on the complete microphone, of course (without an active cable), or on a capsule using an active tube such as the RC 700, or an SKC -- gooseneck.
--best regards