I have a Micro Q Tron and a BSW. IMO, the Q is wetter than the BSW. Only the LP mode is usable on bass, but you can still tweak in really funky sounds out of it. The BSW is a very versatile pedal that I use for filter, filter with octave, octave only and even a synthy fuzz. I've also gone back to it as an auto-wah recently. No matter what I put on my board, this pedal always finds a way to stay in.
Jazz 4 str/Peavey Grind 5 str > MS60B > BEF > Small Stone > LMB-3 > VT > BassDriver > BCD > PBDDI > Gator board/GBUS8/PW cables > Fender Rumble 350