For many years I had mine wired as shown because it seemed to produce a smoother curve on the Behringer. But changing the wires, as I recommended, seems to bring out the vocals better and this is what I prefer. So, at least in my setting, this affects a node in the vocal range that increases/removes intelligibility.
BTW, I did this by setting the crossover up so that I could sit in the seating position and reverse the phase to the horn, then the tweeter, back and forth with a toggle switch, so that I could instantaneously A/B them, and went though many hours of disks just listening to the minute differences.