I wouldn't want a full ebony neck. From my visits to Africa (on multiple occasions) I would bring home sculptures and ebony artifacts, back to the states. No doubt I love ebony very much and my house has many large and small ebony sculptures, but uses this wood as a neck without maple? Ebony is too brittle for me.
Drop a nice piece of maple on the ground and it will hold, try this with ebony, it will break or chip off. The hardness, makes it great for sustaining but, as a durable wood, for a whole neck... not I.