beg to differ.
1. remove from pocket.
2. use tool.
3. replace in pocket.
a 57.14% reduction in expended energy.
Works well for smaller tools like the squirt that can fit in the pocket. For full size tools like the Wave/Supertool, it needs to go into a sheath.
The calorie expenditure of carrying a smaller tool in pocket is also significant but weighed against the more useful full sized tool.