I bought a Kemper so I can learn to play guitar after my kids go to sleep (and sound as good as possible doing so 
). I love it! I'm not in love with the soft shaper or green scream, and I can't leave well enough alone, so I decided to try an OD pedal with the Kemper. I got a JHS double barrel, and I love it too!
The morning glory side is really great for just adding some edge and extra dynamics. I also find the tone control gives easy access to tones I had a hard time dialing in with just the Kemper. Anyways, I have been running it before the Kemper, but I really miss having a compressor in slot A for rhythm.
Has anyone had good luck with using the effects loop for OD pedals? That way I could continue to use the Kemper compressor. Or I could add a compressor pedal and start building an actual pedal board. Part of me thinks buying more pedals will become a rabbit hole. An expensive rabbit hole. Any advantages either way?