So over the weekend I was able to set up a Aeotec Z-Wave USB stick server on a Raspberry Pi using the instructions at https://community.home-assistant.io/t/rpi-as-z-wave-zigbee-over-ip-server-for-hass/23006. It was a piece of cake getting it installed and running under systemd. Now I have to set up a client and attach it to my running home-assistant.
TBD.