I reckon that his sharpening technique has changed alot over the years too. He used to use oilstones and WD40 and employ an old Arkansas stone for use in the field which had a more abrasive grit than we are used to nowadays. The care and attention and use of Japanese waterstones is almost akin to the reverence Samurai had with their blades and he certainly describes the process as almost zen like. I can relate to that, I love the times when the waterstones come out and it is really calming and satisfying when you are getting that fine polished edge on your favourite knife.
I think that that is something that collectors relate too more than users, and it's this almost spiritual side of knife use that makes the Woodlore desirable by people. And that's why they are prepared to pay more for a Woodlore as to them, it's not just an inanimate object anymore. Bushcrafters like this, and the use of 01 tool steel that reacts with nature is proof of such spiritual connection between user, knife and nature, and so is the use of natural woods for slabs. Afterall, the ideal steel for bushcraft would be a modern stainles powder steel which performs like 01 in almost everyway, but does not stain or rust. The ideal slab material would be none warping, non-rotting micarta. These combinations do not react to the natural world and require virtually no care or attention, but there is no spiritual connection when you don't have to care for a thing. Bushcrafters are a soppy bunch, and over a knife too. What strange people we are.