I built the Snow White but modded it to have a sidechain input for the envelope detection, like in the Chunk System's Agent 00Funk. I drew the mod over the Mark's layout since it's really simple, just move one cap, one resistor, one link and add two cuts and a switched jack.
This is how it looks
I made a video demo which shows how it works, warning! crappy sound and shitty bass playing
demo video. I recommend you to watch the demo of the 00Funk by Ed Friedland
hereThis is the layout for the splitter on the video