Bone: If you use only the compacta ( the hard outer layer) - I have not felt or perceived any benefit. Putting some superglue on the almost finished surface ( I do this before the last two sanding grades) gives the same result.
If you use the whole bone, including the spongiosa ( where the marrow is, the part with lots of holes) you get a solid material there.
I do not use that part though. I use fresh, well boiled beef bone, and feel the bone marrow is still present.
Antler: As the inside is porous, you get this part to be solid and strong.
I like to go an extra step with (reindeer) antler. I cut it to a overlarge length, then boil it gently. Dry vewry well.
Then do the stabilization.
I use antler for knife handles, and handles in general, so like a bit of strength.
Traditionally, it was not stabilized, but still very strong and functional. I do not think any Saame artisan stabilizes the antlers.
I just like to do unnecessary things!
If you only use the hard part of the antler, for buttons, scales and plaques, that part is very strong as it is.