it should be used with any device that has serial USB CAT input.
So it could be used with FDM DUO and FDM DUOr but not with S1/S2/S3 directly.
Using VSPE it should be used with SW2, but only if you are able to compile under Windows..
The compilation should be possible since the only libraries needed are libportmidi and libpthread that exist in Linux, MacOS and Windows.
Hope this helps,
Giovanni - HB9EIK