I think as a guitar-mounted (momentary?) device, this would be great. No need to have it on a table, really. As a CONCEPT, however, I applaud his kind of ingenuity. The only two guitar players that spring to mind immediately when I think of truly innovative delay use are Brian May and Nuno Bettencourt. This enters a slightly different realm with the delay being a full 4 beats behind. It would also be great to be able to adjust the delayed signal, which I guess is simply a function of what kind of delay you are using.