I've just tried a playalong with the video posted earlier - My usual three-finger technique** gets tired quickly, so I found index on the E string, middle on the A string 7th fret and mute E with the thumb works pretty well. Vix-style scrunchies, hipshot or a 5-string not needed.
** index and middle finger alternating on the same string, ring finger mutes string above, thumb mutes string below. When ascending strings, ring fingers makes first pluck; when descending, rake with whichever finger just plucked