Schoeps' windscreens have product names that start with "W" (= wind; same word in German and English), not "B" (= Besprechung, German for "speaking at or into" a microphone), and they're designed quite differently. I think that a lot of users haven't caught on to this difference, though. The "B" products are pop screens and have most of the protection in front of the capsule; you use them only when that's the expected source of any disturbance.
The B 5 D is especially that way. It's wonderful for a desk or podium mike; I use it that way all the time. It was designed for "The Three Tenors" -- close-miked singing voices on a semi-outdoor stage with yes, some mild wind from time to time--but the main concern was breath noise and "popping" on consonants such as "p" and "b". Those vocal mikes were "spot" mikes, though; the Decca engineers probably cut their signals very sharply below 80 Hz or so, and rolled off the remaining bass to counteract proximity effect. Both types of filtering help a lot to prevent wind noise from getting into a recording, but neither you nor Decca would want to do that to your main microphone signals, I'm sure.
If you're dealing with indoor air currents that are fairly constant and that generally flow in the direction of your microphone diaphragms (e.g. air conditioning), then the B 5 D might make sense; otherwise not so much. With directional capsules the moving air has to be kept away from all sides of the capsule with equal importance. Unfortunately there's no magic way to make a windscreen for directional capsules both unobtrusive and highly effective at the same time, since the capsules have acoustical openings on both sides of the diaphragm, and they respond to the instantaneous difference between the energy arriving through the front vs. the rear/side openings.
If you can possibly use omni capsules instead, you'll be much better off if wind occurs--like maybe 20 dB better as a wild-ass general estimate. Even wide cardioids are noticeably less wind-sensitive than cardioids or supercardioids, and figure-8s are the most vulnerable (pure pressure-gradient transducers).
--best regards