It's built for a specific purpose, and it works. I use mine for a Mother 32, a DFAM and a Moog Skiff I have some modules in. Having it all portable like this is extremely handy. Ergonomically it's nice too, and it's easy to keep patches fairly tidy.
Where Moog have fallen down on this is not providing a travel bag, or even the option of one. I ended up buying a bag for speakers instead to carry it in.
Another feature that would have been nice is maybe some guides for wires - plugging in your bottom Moog becomes a slight pain in this setup. I ended up gluing in a plastic sheet on the bottom (to protect from spills also!) and I can coil my cables in their instead.