Hi,
I tested this setup:
wfview 1.6 on Raspberry PI, USB connection to Icom 7300
with Radio Server enabled,
with rigctld enabled with TCP server port
Remote wfview 1.6 , Radio Access over internet
Remote DXlog.net over internet
with Radio1 CAT TCP connection to PI’s rigctld TCP port
The good news is that it all works, including the CAT connection directly from DXlog.net 
Problem: change QRG CAT commands from Dxlog.net (change QRG) sometimes works, sometimes not.
May it be that the Raspberry is overloaded ? in the server log there are lots of:
“audio: Output Buffer Full” messages. Yet, audio works sufficiently well for CW.
73
Marco HB9CAT