BCA (bass-cord-amp) ... well sometimes, used to be ALL the time.
When sitting in or playing with someone elses band then I'm BCA
Never one to be a total "purist" I'll use whatever it takes to make it work with
my own band ...
As others have said in a three piece band setting as I have to deal with, there
can be a lot of space to fill, so yes I use some effects, which is pretty unusual
in a blues based band I hear (no other bass player I know does this).
Anyway here is the reason for my effects vs no-effects ... I used to use an Ampeg SVT
with 4x10s then switched to GK heads (that growl thing) and 4x10s then to smaller EA
2x8 cabs. The grunt and growl gave way to a very clean sound as I made the switch to
Mark Bass and Genz Shuttle amps and my own MOjO Sonic cabs (which are pretty Hi Fi)
I still needed the grunt and growl sometimes, hence pedals to do the job.
They include OD/Fuzz, Octave down, TubeSim compression, and 4 phase roto vibe.

... Still the sound of BCA is great in most settings.