Also, for future noobs that come across this thread, you don’t have to uninstall the switch to use the new device handlers.
You can just change the device handlers via the IDE as JDRoberts points out here:
Changing Device Handler after Install
sign into the IDE and get to the list of your devices
click on the name of the device you want to reassign. That will open its details page.
go all the way down to the bottom of the details page and click the red EDIT button. That will take you to a page where you can assign the device to one of the other device handlers in your account’s library
I will add a #4) your custom devices seem to all be at the very end of the list, so don’t look for them in alphabetical order