This topic is 10+ years old today (7-12-2021).
However, I'm opening it back up because there is a critical piece of information missing that none of the initial responders addressed.
"Hi, I am ordering an indian rosewood neck, unfinished."
Is it SOLID rosewood?
Probably not.
So if not...................
Let's assume that the fingerboard is rosewood, and the back is maple.
So, if true, do the same responses still apply?
My guess is that they do not.
My understanding:
Certain woods like rosewood do not require a finish because they have natural oils in them.
If the back of the neck is maple and is unfinished, then according to Warmoth's warranty rules the maple portion needs to have a hard finish.
True?
Note: On the old website, it said that about 10% of the unfinished necks would suffer from warping and probably be unplayable.
My unedumacated opinion is that unless you live in a VERY humid climate, or are showering with your guitar, or you are using your neck as a canoe paddle, an unfinished neck will probably be fine.
It will probably get dirty/stained from handling, but will not warp.