I ran the Nokon beads for all of the sections on my SB. However, I had to buy a lot more beads than the ones that are included in the kit. I think this is a common complaint if you read the reviews. I also bought long lengths of the inner sheath so I could run it the full length of the cable.
I recently had to replace the rear derailleur cable and I just took the whole Nokon stuff off. After using it for over a year, I'm not sure it has a great advantage over any other quality cable and housing and it sure is more trouble to install.
My .02
dD