Agree, I have an E2 square bar, much easier to just pop out the bars and it was more than sufficient for towing my boat behind my old 5th wheel. Don't need it with the new rig.
FWIW, for even more sway control, one can step up to an Equal-i-zer 4 point. A little more money but honestly they're the same company. The Fastway is just a cheaper, somewhat less effective system they sell under that brand.