I gave it a go to see how it compares with XMR-Stack on my dual mining rigs.  My results below are for CPU only. 

XMR:  500h/s (XMR-Stack) vs 330h/s (JCE)
  => ryzen 1800x
  => 34% decrease in hashrate

LOKI:  100h/s (XMR-Stack) vs 180h/s (JCE)
  => ryzen 1700x
  => 80% increase n hashrate

For both, the config file is the same.  Startup batch is different as i mining different coins using different algos on different pools. 

I am amazed how huge the hashrate variance is between the two coins.  But nevertheless very happy to see the hashrate of Loki go up so much. 
Is there any explanation for the variance between the two coins? 

I'll stick with XMR-Stack on Monero and see how JCE goes for a few days on Loki.