Peter you have your own opinion but I have highly polished Buffhorn and dulled it again cos it just didn't seem right.
I have used waxes and ca / celulose finishes.
The best finish I found was a wet sand through the microgrits and leave alone The time i has spent in the pocket has only enhanced the feel and natural sheen.
The pen I used at Fujitsu was a buffhorn done in this method, the more I used it the better it got.