Martyn,
The grips are stabilised with Linseed oil. We found that this worked much better than other oils or polymeric stabilizers (for this application). Linseed oil also penetrates well - with 'forced' impregnation, there is a tendancy for oil to 'sweat out' at high temperatures. The grips are finished with a mix of waxes. The grips should be relatively low maintenance even when used in extreme climates. We would recommend periodic re-waxing, however if people prefer an oil finish, the wax can be removed and danish or tung oil can be used instead (regular re-oiling would then be recommended).
We intend to produce a small booklet to go with the knife; this will incorporate care instructions and basic instruction on usage, sharpening, etc. Obviously, though, we need to work with Ray on this, so we will be issuing some basic care instructions in the interim.