Did you get this figured out?
I was able to use drivers from this channel.
Then download this driver: Z-Wave Switch and Child Mc
Exclude your enerwave switch from the hub then add it back and mine came up as a dual channel enerwave switch when it was discovered. Then go to the switch tile, click the 3 dots, go to settings and turn on create single device for switch 1. After doing that it created another switch, I was able to name the originally created one bedroom fan, and the newly created one bedroom light and they both worked flawlessly with smartthings and alexa.