I managed to get it working with SolPIPlog, one Raspberry Pi, one USB cable, can monitor bother inverters, broadcasting to EmonCMS where I have to build up my own Watts feeds from the rather rudimentary Volts & Amps inputs coming from SolPIPlog but it's working great. I still have ICC connected to monitor the Pylontech stack, have lost the "back to grid based on SOC" functionality though which I plan to solve by getting the PyL option working, I got the cable working but hilariously only the master Axpert King sees the Pylontech, sigh.