In the groov AR1, the SoftPAC Controller is just configured as usual, so just configure the device as an Opto Controller, put the IP address of the PC running SoftPAC and point groov to the .idb.txt file. Everything works as expected.
What you cant do (just yet) is use the Node-RED PAC Nodes to read from SoftPAC.
To my knowledge, the SSD encryption is tied to the hardware of the PAC controllers, the PC does not have the same hardware.... But to be sure, I will ask around tomorrow when I am in the office.