Maybe by using some panning settings? Pan one loop left, other right and use some modifier to pan between them?
I’m thinking if someone wanted to run a couple of outboard pedals in the loop, it could be done parallel. One pedal connected L and one R. Assuming the loop block has pan controls (not in front of my AX8 at the moment), they could use a scene controller on the pan modifier and choose how much L or R by scene. I think?