Yeah... bone in - just like a ribeye.
Thought I would try something a little different. To me, Impapa is tough because it's so difficult to find 6 inches that are straight. So the scales are usually always curved which really isn't such a bad thing. The inner bone unfortunately, has a cartilaginous center which is weak. We overcame this by applying 6 coats of thin CA and the 2 coats of thick slow drying CA. I kept the horns bulky to preserve the curves in the horn and the original look. Next time I may sand down more to expose multiple areas of bone. (It will look either very cool or very, very ugly ). The 13/16 Jos Elliott blade fits in very well. The scales could easily accommodate an 8/8 which may be a later option.
The wedge is kudu horn and hardware brass. Hope you like it.
~Steve