Is there an easy way to get Hubitat virtual switches to appear in SmartThings?

[csteele]

There are several choices. For just a switch, there's the built in App Hub Link and it's ST companion Send Hub Events:

https://docs.hubitat.com/index.php?title=Send_Hub_Events

Far more complete is HubConnect which supports many more attributes.

[RELEASE] HubConnect - Share Devices across Multiple Hubs (no longer SmartThings!)

There's a lot of features added to v2.0, but a lot of them are related to first time install benefits. Things like the Driver detecting the break in Parent/Child. That occurs most often with a new install especially an out of sequence. You've got a working install. And there's nothing in the EventSocket method of communications that was improved beyond those install benefits. Obviously, you identified one of the big changes: the addition of a THIRD communications method, the NodeJS Server. The…

Neither will work for much longer as ST kills off both their IDE and Groovy.