That was a good, thorough video. I don't have any more space to set up another Amiga in my house, but since I do have a rack with effects modules beside my computer - I could see something like this fitting in nicely (I like the rack mount chassis).
PS: there is another video on YouTube demonstrating how to use the features of the MagicBox (I saw it automatically thumbnailed at the right side of the screen when watching your video).