I recently bought one of AG Russell's Marble, buffalo horn Woodcraft knives. I was *very* disappointed with it. The spacers weren't even with the horn..., forming ridges..., and the horn itself was slightly loose, and would twist just a little, in my hand, when any lateral pressure was applied. It also wasn't "shaving sharp"..., which I expect from any reasonably quality knife (though even some very expensive customs haven't come that way..., so it's not a "deal-breaker" for me).
I sent it back.
While waiting for that knife, I'd ordered one of Marble's new Plainsmen knives. I couldn't stop the order..., but I was very pleasantly surprised when it arrived. The spacers merged smoothly into the maple burl handle. The handle was tight. And the knife shaved right out of the box.
And I like the reputation of the 52100 steel.
So my reaction to Marble is mixed. I'm happy with the blade configuration and quality of the knife directly from Marble. I wasn't at all happy with the one from AG Russell.
I don't know if Marble puts a little more care into a knife ordered directly from them. I've ordered a *lot* of knives from AG Russell, and have never been disappointed 'til now..., so I don't think it's Russell's fault.
My two cents..., though it probably doesn't help much
Kirk