The active/passive description is just a recommendation for selecting the right pedal for your pickups so that you get the optimal volume profile (if you were plugging the guitar direct to the volume pedal)…there's nothing 'active' about the pedal.
For the record, I use a Roland EV-5 on my 'Factors.
I was using the EB VP Jr (25k) as a controller for my G-System and that was fine.