The problem with this sort of thing, and drive/fuzz in particular, is that it depends so much on what you feed into the pedal. For example I love gritty thick fuzz on a 70s jazz bass but not on a Precision.
I dug out my muff today to try and cop this sound but actually found it was too thick; instead I used my EWS Stormy Bass Drive cranked to maximum with a little bit of glitchy octave thrown into the mix and got pretty close. In particular this combo allows the sound of the instrument to come through the filth. You've got me listening to the whole album now, it's great!!
Edit - just tried again and found a combination of both the green Russian and the EWS gets the sludgy feel slightly better (this is using a Celinder J-update bass with the tone open)