Many years ago I ruined a few recordings when the wind turned out to be stronger than I'd anticipated. Since then, the relatively few times that I record outdoors I've deliberately been a bit overly protective about wind. It's like the way that I'd rather record at 6 dB too low a level rather than 3 dB too high. Or maybe I'm just being respectful of the way that nature doesn't always heed my wishes.
Anyway, to answer your question directly, I use the B 5 D particularly when I record narration at close miking distances. It's also ideal for voiceovers when you're using an end-addressed capsule, or basically any time you're close-miking a speaking or singing voice
on axis with such a capsule. It was designed for use on stage during an outdoor concert of "The Three Tenors" that Decca planned to record and to issue as a CD and a DVD (see photo below). The mission was to protect from breath noise and "popping" without coloring the sound any more than absolutely necessary.
The stage was inside a large concert shell--a "semi-controlled" environment, you could say. The fact that the B 5 D (or the B anything) works as a windscreen is a nice side effect, but with that size and shape it's strictly for mild wind. The "B" stands for "Besprechungsschutz", which means "close-talking guard" in the older, U.K. usage. The usual American English translation these days is "popscreen". Informally they are sometimes called "windscreens" but that can lead to unfortunate misunderstandings and disappointed expectations in my opinion.
Schoeps' actual windscreens--designed to take into account the fact that wind can come from any or all directions--all have product names that start with "W" (= Windschutz). There is a W 5 D with an internal structure like that of the B 5 D; externally it's larger and spherically shaped. See
https://schoeps.de/en/products/accessories/wind-popscreens/hollow-foam-type-windscreens/w-5-d.html--best regards