I tried the east river drive on Monday along with a couple of other pedals.
The east river dropped loads of low end, but had a quite pleasant character, so blending would probably work quite well.
I ended up buying the hot tubes nano. Lovely valvey fuzzy grit. Covers ground that my vmt and b3k can't.
It has a switch to bypass the tone stack. It brought the pedal to life for me. For the princely sum o £49- a real winner!
The bass wah looks very interesting. Id love to give that a whirl!