The rear one has been on for a week or so and that alone has reduced steering effort into corners
I put it on the softest setting until the front one is fitted.
Both of my front drop links are seized at the ARB end, which is why I haven't done that bar yet. So with that in mind, I strongly recommend getting a set of 4 drop links before embarking on this job. The M6 spline rounds out super easy.
I don't recommend fitting just a rear bar. It's fun for sure, but will be even better with both bars. Think of a table with a burly chap at each end fighting each other to tilt it. With just the rear bar fitted, that chap is now much stronger than the other chap, so that end of the table will lift up a lot easier than the front