+1 to what Julia said
The only things I've ever used the butt end of my knife for was to crack nuts or to bash along the length of stuff like nettles to break out the fibres for cordage.
M
I tend to use a piece of fire wood for both of these, about the only time I use my knife in a percussive manor is to crush garlic...
This all said, I do batton with my knives, even the little peasant. I think it would be interesting to add a quick "how long is it" to each of the blades featured in this thread. I wonder if there is a correlation of blade length with nationality and gender...
For completeness - Frost knife - 100mm; Peasant Mini - 67mm.
Julia