I have pro gear that has a phase inversion button. Kind of useful to quickly check things. I am surprised that nobody has this. Amazing that this hobby values fancy cables and the effort that goes into swapping that fancy stuff out but a simple polarity switch seems too complex!
Um, no one has it because almost no one finds any value in it.
But rather than swap cables you can always swap your speaker connections. This is something everyone can do.
For those of a digital mindset, you can use the public utility SOX to invert absolute polarity on most common formats. Makes it easy to experiment at home.
Best,E