That skillguide referred to is definately Soirana's. Characteristic writing style. So no good saying it is Grey's. It is Soirana's and don't add his stuff if he doesn't want to. Respect the wishes.
Anyway, this kind of info is far too detailed for the guidebook. Guide-book. Guide to the game, for new and intermediate players. Experts who really need to know the nuts and bolts of everything can go to the wiki, when it gets finished.
Besides, not hard for anyone (else) who wants to, to research and learn more about any skills.
> despise that book
You despise it? Because it has some errors in it? Didn't you use it when you were learning the game? Wasn't it helpful? A good GUIDE? Now you're an elite player you know enough that the guide isn't, and can't be correct in every way. So what. It's a guide.
> Rumourbook
Now I'd call that immature. Treat it like Axe. Don't use it if you don't mean it.
ADOM General's warning: Treasure Hunting causes slowness, frailty, terrible markmanship and is dangerous to your characters' health