Parx

I own several Global knives, as well as the Shinkansen sharpener. Note that the instructions for the Shinkansen specifically state that "it cannot be used for the G-11, G-7 GS-4, etc. which have the Japanese style one-sided cutting edges." I would recommend the Edgepro sharpener, as others have already stated in this thread. It does a better job than the Shinkansen (which is a decent little sharpener, witin its limitations) and will handle all of your knives.