There are only two ways to hold a knife or any blade if you think about it.......
It much depends on whether its a two sided cutter or one sided....
Two sided is better than one.....
Useful for cutting the roast joint on Sunday I suppose, or for sharpening a pencil if you don't have a rotary one. I kind of like whittling with a knife and even carved out my own wooden tanto to while away a few winter hours.....