Just to note, you can install a friction sway bar on both sides if you like. I used to run that setup with my old trailer, with the latest one I have a "equalizer" style one. I will say that the dual sway bar setup worked great for us, and I did like the ability to adjust it "on the fly" so to speak by tightening it up if I felt necessary. That's something I can't do with my current setup. Or adjust it on the fly if I have a heavier or lighter load, which you can do with the chain style ones.
However, when setup properly, I think the equalizer style ones are great! My dealer set mine up originally, and it made me wonder what all the fuss was about. Then I watched some videos, bought some good torque tools and went to a parking lot one day and set it up myself. Been perfect ever since!