If so, can anyone recommend any settings? Would be nice to step on it and not blow my head off every time!
Maybe try turning your bass volume down. Less signal will hit the pedal a little softer and you'll get less gain (in theory, although I haven't tried).
Eh, I’d say no. I’m not sure I’d call anything that’s a fuzz subtle. If you wanted a subdued fuzz, maybe try one with a clean blend and dial in the mix of fuzz/dry.