Yeah, would love to try one. The demo showcases some pretty cool sounds on guitar and keys...
The biggest drawback to me are the joystick ends... why not a ball end?
Would've been so much easier to control with your foot...it's a pedal after all.
I emailed the guys at Walrus, and they said the ends aren't replaceable, and that they chose the joysticks for function over aesthetics. The latter part makes no sense to me (since ball ends would offer more function...)?

Anyway...
I remember Devi having some on her pedals...maybe she can weigh in...