I don't have an issue with line twist. Maybe because I use mostly spoons and buzz bombs. My last reel had same braid on it for several years without twisted line causing problems. I would also be surprised if the torque required to spin a swivel would be less than what is needed to twist braided line.
Salt water anglers use FG knot for giants like bluefin tuna and marlin...they're not bothered with the twists on 100lb braid, why should we be bothered for much thinner lines below 20lb...I'm running 10ft leader (12lb seaguar invizx)on 5lb braid, never had any problem about line twisting, not even when I was using 15lb braid when I started gear fishing...also I don't use swivels on my spoons.