Have been using the Kemper Stage for the last few months. Side-grade from Helix LT. Bought the Core for a backup/smaller rig. Never got used to Amp/Cab sound. The Helix was much better to my ears, the Kemper even more so.
Last couple of days, decided to add the Core to the Kemper via both its Send and Returns. Still in the experimental stage. The plan would be to have multiple presets with the Kemper loops being shifted according to needs.
The Core loop modes are set to 'Branch Out.' The Returns are not being used.
Using both inputs of the Core for adding effects both pre and post amp/cab modules. Idea is to use the Kemper to shift the Kemper loops for each rig in a performance and via Midi PC to change effects as required via patches on the Core.
Hopefully the diagram makes sense.