I haven't cut a curve in strait stock in nineteen years, never made sense to me, trees grow crooked every day.
Even so, I'm still often milling the the sapwood off of natty curves - Free form following the grain, a chain saw with rip chain, sometimes guided on bigger section pieces by a second set of eyes and hands via a stinger handle.
Cleaning that up with a Mak curved body. Not caring much for sanders or the finish they yield, I prefer to produce a final finish with this Spokeshave >
http://www.veritastools.com/products/Page.aspx?p=116 Pricy but worth the investment - Chatter free and smooth, it is great for cleaning up large curved reductions and relief cuts also.