I went for a drive tonight and am stoked with the difference that it has made! I noticed with the S-techs without the HD RSB, it's handling was almost direct but with understeer under WOT coming out of corners, with the right technique, you could get the back to slip out. Now with the RSB installed, there is much less body roll in and out of corners, and under hard cornering, it'll just stick to the road - basically it's point and go....but if you jab it with WOT you can get it tail happy, whilst still being very controlled. Definitely one of my favourite mods!
Comparison stock vs Whiteline 20mm Non Adjustable RSB. Weight between the two is a big difference - stock is hollow and Whiteline is solid.

Side view, you can see the mounting points without HD RSB mounts. I like how the underbody is getting colourlful

Note, you see how I painted the disc hub silver.... I used a high temp VHT silver with a high temp clear coat. But the paint has been burning near the pad wear area


And lastly, another exterior shot after a good wash. First time I turned my foglights on in a while, and they look so yellow compared to my 6000k headlights.
