Do any of play it in a Chapman stick manner, using both your hands tapping basslines and lead lines in unisone, because that seems to be the best potential for such an instrument.
When I owned my seven-string, I played it like a regular bass. Chapman Sticks are set up much differently than standard basses to allow for the whole unison playing/tapping thing. They hang vertically to allow your right hand to go over the fingerboard easily, and the strings are often set up with the bass strings in ascending 5ths and melody strings in descending 4ths.
