Color me "Cubed" then. I am the guy who also loads the pair of PA speakers, PA Mixer, two guitars, guitar amp (head/cab), guitar effects pedal board, (I play guitar in my Duo in addition to Bass) Stand bag, cables bags, Light bar/light stand, bass amp and cab, bass or two.
If a second bass cab is not warranted, it's not getting crammed into my SUV with everything else. Would it sound better and look cool? Of course. But my back is getting enough of a workout as it is.
I am a Square indeed .... and a "moving man." I play for free. My gigs just pay me to move all that gear back and forth. Ya k know?
If only I was a bass player accountable for only my bass gear. ..One can only dream.