I tested 2.7a yesterday on an RX580 8GB ... seemed to work well, very slightly faster (~ 0.2 MH/s) than claymore at same core/mem clocks/voltages.
I like it and would definitely considering switching to it from claymore.

1 issue I noticed is that when I setup the monitoring port, I'm able to see the console output by accessing http://IP_ADDRESS:PORT however a monitoring app I used (claymore monitor on Android) is no longer able to get the stats. If I understood correctly, claymore monitoring apps should still work ?

thanks!