That would be one hell of a set up. certainly convenient for the musician on the go.
I swap out pedals often, trying this into that and the other into whatever. Maybe I have an underlying fear of commitment. Ha!
Reading further on that link, I saw that two offerings- Rooster and Fuzz are not available for +9v. I guess they don't like to do voltage inverters. Luckily that's not a problem here.
Still not sure where one can get such an enclosure, though I've seen smaller boxes that could be of potential interest.
http://www.hammondmfg.com/dwg16.htm#10degreeI've seen similar in an electronics store. they're desktop keyboard sized. would make for a decent multi effect box. a little expensive but maybe worth for a one off.
best of luck!
just checked some more
http://www.protocase.co.uk/products/index.php?e=CustomI'm sure they'll make whatever you want and I'm sure you'll pay through the nose for it.