I am interested in this device, but as it stands I would never buy one.
You are calling it the first open source stomp box, but the code for the user interface is proprietary.
Thus, it won't work for me on Linux, and that is pretty much where the whole idea of open source came from
in the first place.
On top of that I think you should have made your workbench in Java, not C#/.Net. Then it would already be cross-platform, available, and a real consideration for me.
Maybe I can help with a Java-based workbench port. I have worked a number of years creating Java GUI based applications that work fine, at a minimum, across Linux, OS X, Solaris, and Windows. What are the chances of getting the C# code either out in the open on your Google repository or sent to me under some kind of NDA, or some other conditions?
Can't make any exact promises about timeline or ability to complete just yet, and it would be nice to have some sort of consideration or something sometime in the future after I get a version working for it, but it might be worth exploring.
What do you think?