FacePlant44wrote a review of Gore RideOn Sealed Low Friction Derailleur Cable Kit on March 17, 2011
This sealed cable system provides the quickest and smoothest shifting ever. Very nice. It has been raining all week and my shift quality has not changed one bit.
I only had one problem with the installation: The outer sheath is larger diameter than standard Shimano sheath, which means it was torn up quite a bit when forced through the fixed diameter cable guides on my Cannondale Raven. Other than the fact that my installation does not look as clean as I would have liked due to the cosmetic damage, the shifting is the best it has ever been.