I am testing the DEMO of this MusicLab guitar and I can say it works perfectly with Scaler
It is way easier than UJAM, and easier than AAS Strum GS-2 for many reasons, for example you can change keyboard’s playable parts in the plugin itself, avoiding other plugins like MIDI polysher or PITCH tools
There is a huge patterns’ database, and you can even change them with Scaler’s patterns
I don’t know it the user can add custom MIDIs, but I think it’s possible because they are plain MIDIs, not embedded in a proprietary file
The sound output is not exciting, but I understand that most MIDI guitar players use other stuff to change the sound, like e.g. Amplitube
My idea was not to buy exactly this guitar, but the Gibson like
Some folk around can give further insights?