Your definition of unfinished is different from what a luthiers definition of "unfinished" is... Your definition seems to be something along the lines of "There is nothing applied to the wood at all, it is left in its complete natural form..." A luthiers definition of unfinished is something like this... "The only thing applied to the wood is a thin layer of lacquer that protects the wood from warping and water absorbtion."

You want bare wood... which you will never get from any manufacturer... Due to the fact that if they sold 100,000 necks with nothing applied to tehm... probably 60,000 of them will warp in a matter of months. Unfinished simply means that the finish hasn't been applied... only the prep stage of the lacquer process has been applied. This prep stage saturates the grain of the wood so that it doesn't absorb high amounts of moisture.

I wouldn't suggest owning a neck that has no lacquer or some kind of sealant applied to it... and if you do... I suggest that you get a guitar that has a bolt on neck... because you'll be changing your neck every 10-18 months.