Ive never actually seen a graft on a Darne stock. There is a wood screw down the center of the wrist, that complicates things. It would be easier to start the graft behind that, but, you are well behind the wrist by then. It would be a tough job.

Not saying it cant or hasnt been done, but, Ive never seen it. Ive seen lots of Darnes that need stock work, however.

Best,
Ted