Saw a handle Chris (NoChop) made here and thought to myself, why not make a D for a Western knife? Forgecraft made handles that were straight (without a hook).
Mine D would be similar to wa version, tapered on all sides, will have ferrule taper on both sides, ridge on the left or right side, oval in shape, and will have an angled butt.
I got to give a credit for this to Chris. Somehow this idea never entered my head till I have seen his work. Granted it is not true D, but in that picture (see link above) it looks like a D.