Heard about the Vox VFS2A Channel switcher pedal. Supposedly works with my Vox Night Train 50H G2. Just wanted to see if anyone else has been using it on the same amp, as there aren't any reviews on it for my specific amplifier. Also wanted to make sure that it enables me to use ALL 4 channels on the amp, because that is a must-have. If it doesn't enable me to do so, does anyone have an alternative suggestion that would allow me to be able to switch between all 4 channels?