So I built my own with parts from Mammoth electronics. Very simple DPDT switch and output jack. Only issue is I can't get the LED to switch on/off when the channels are switched. When I do wire it up correctly to get the LED working, the channels don't switch. When I do get the channels switching, the LED doesn't go on/off. Using a 470ohm resistor for the LED. Will have to keep on researching this issue.
I don't know how to attach an image here, otherwise I would. I don't have a URL for it, it's just on my iPad. If you search Ruben Reza Music on Facebook, you'll see it there.