Thanks chaps.
Syph - I riveted, then polished the heads, then lightly peened again to give a nice beaten finish. Looks good and the G10 is quite resilient and doesn't show marks. Nice material for scales - cheap, easy to work and doesn't need finishing. Stinks though.
It started as a Swiss Champ, which is why there's a tool on the back of the saw. It should be a fine screwdriver, but my friend is into wood carving so I thought a chisel would be more appropriate for her.