I've mailed Parabellum to ask if they have something interesting lying around.
I'm more interested in adapting a existing fairing from another (scrap)bike then designing and building my own.
For the front side I'm fond of the Yamaha Tenere style fairing, but with a larger windscreen to keep my head out of the wind:
Of course adapted a bit because I don't need no fancy airflow cooling holes:
Now this won't give the super efficiency that you see in some projects here but it would increase the range significantly while retaining agility.
Current stock consumption is about 70-80Wh/km.