I have an 08 R3 SL with SRAM Red and installed these cables about 2 weeks ago.
When I first received and inspected the cables and housing, I was impressed with the quality.
Installation was very interesting. I had read this post and several others so had some good ideas on how and what to do. The braided housing for the brake cables is very stiff. It is also hard to cut. I tried a Park cutting tool but it just crushed the housing. I ended up using a drill with a cutting wheel to cut both the brake and shifter cable housing. It actually worked well and once the housing was cut, I just cleaned out the cable hole and filed off the edges.
I used the ferruels on all ends at all points. The brake housing ferruels are silver and a little bulkier than the shifter ferruels. At first it did not appear that the brake ferruels would fit into the slots in the shifters but I used a flat headed screwdriver and was able to press them into the slots for a nice fit. The only real issue I had was the small section of brake housing that runs from the point on the back end of the top tube to the rear brake. I tried to cut a section of the silver braided housing but it was just too stiff to work in this section. The rear brake would not release properly because the housing was so stiff and applied too much pressure. I ended up using a section of the shifter housing and it works just fine. I do like the feel of the cables. Shifting is alot snappier and braking feels more solid. The worst part of the whole installation was trying to thread the shifter cables into the Red Shifters. Whoever designed the Red shifters should be shot.