The reason for the ankle carry is nor for self defense, but just to have a knife for every use. I carry my gun for defense and also carry a backup gun. Just don't want another device in my pocket or belt ??
The Spyderco Manbug will also fit anywhere the Victorinox will.
Even in a sock! Voila, ankle carry!
- "If someone has a gun and is trying to kill you, it would be reasonable to shoot back with your own gun." -The Dalai Lama
something like this - this one not available anymore