My grandfather shaved with a Dubl Duck on occasion. He would trim all the grandboys sideburns with it. I really dont remember him shaving with it himself. As far as my shaving, Mach 3 self taught with no problems. I enjoy(ed) wearing a beard so no problems. I think what we have a vast amount of information at our fingertips here. Its also a great way to get many aspects. If grandad said thats how it was...thats how it was. Here...we can have the opinions of many members.