Thank you!
I never thought of splitting the the FX Loop send like that. I see that it can work. However, it's really complicated, and I think I would have to replace my pedaltrain metro 24 with something a bit bigger for that kind of cabling, because right now, there is absolutely no room to take cables in/out except at the input of my tuner, and at the top and left side of the HX Stomp. Everything else is tightly fitted down with probably too much dual lock and the only way to take a cable out is to take the pedal off the board, and as I understand it, when I switch between the rigs, I would have to de/attach cables from the FX Loop side of the Stomp...
Maybe I could solve this problem by getting a bigger pedaltrain and then introducing a switcher like a GigRig G3 where all the ins and outs goes from/to that. Any thoughts on this?