Swaybar for regular driving?

[ern-diz]

Originally Posted by dogsridewith

The cross-the-car part of this piece isn't "solid". It is torsionally soft to do what a sway bar does. You might say it replaces separate trailing arms, two lateral links and a sway bar with a single piece. That was VW's invention, and why Toyota uses it.
This is not off-topic. It will be fine for OP to know more about his suspension as he modifies it...particularly that it already includes some roll control.
(In a very crude search of the Yaris rear suspension, I'm finding the terms "torsion beam rear suspension," and "semi-independent rear suspension." The main thing is to understand how it works.)

So, if I'm comprehending, you (like Jason, the gentleman that is 2 Yaris race builds deep and who appears to have the most Yaris track time logged) would vote against adding a sway bar, correct?