Although I would like to have one, I don't think I'd buy it. The custom nature of the FB doesn't lend itself to an all-in-one solution. How many CarPC or other automation projects DON'T require taking a dremel to an enclosure?
You can't use the fusion brain completely by itself, so it's kinda dumb to have it's own case. I have one sitting on my desk (styrofoam coffee cup as an insulator...) & another in a $3 plastic toolbox with screwed/glued motherboard standoffs. Either way, i have to have at least one other "box" nearby to contain the power & computer. I just don't see the benefit vs the cost (even at ~$10)