Depends on the gig. I regularly play jazz and 50's rock at nursing homes and for that I just bring an amp and my Rob Allen. For the funk band I bring my board but only use the env filter on one or two tunes (mostly for solo lines) and use the MicroPog in a couple of places where I want to emulate an organ. For the jazz/blues band, same thing, although I might throw some chorus in the mix as well.
It really depends on what I'm trying to do. If I'm supporting the music with a "bass" line, then I don't use any effects, instead just working the instrument with my hands. If I'm trying to emulate another instrument or fill out some soundspace, then I'll use effects. In a trio situation I'm more inclined to use effects as I'm usually covering more ground and have space to hear what's going on and get experimental. In a bigger band, I go with less effects. If the effects (or my playing) draw attention to the bass when the singer is singing or a horn is soloing, then I'm probably doing something wrong.