I played with it last night both stereo through spdif and mono through XLR main outs. Overall much less impressive in mono which is to be expected. Even considering that, I'd likely put it on all my rigs if I could for that extra secret sauce sound. However, I don't want to sacrifice my post amp slots. I almost always need a boost, chorus, delay, and reverb (I play in an 80s Cover band, it is a must)
+1 to the idea of adding this as an effect in the output section if DSP allows
if you are playing 80’s music, you can put your chorus and delay in slots C & D as most of the amps used at that time did not have effects loops and were in front of the amp.