This is a must have. Looks beautiful, protects the device from dust and impact. This particular model even has nice sponge endings to avoid scratching the wood cheeks on the Moog synthesizers. There's space for the short patch cables but that's only useful if you're not patching anything external which I think is pretty popular.
This works for Moog Mother-32 and DFAM. I use it for the Spectravox, works great, too, of course with the microphone detached.
However, for the Moog Subharmonicon it might be a tight fit as the top right knobs on the Subharmonicon are closer to the edge than any other Moog synthesizer in this form factor so far.