Harley Benton PB1 Bone Pick

I tried these picks made of bone, ebony and horn.
I use them for playing gypsy-jazz on an Altamira gypsy jazz guitar.
The horn picks are the only ones where I can spot a little wear after playing them for some hours, though I think they will last long.
However, the tone of the horn picks is better with much less pick-noise than the others. The bone picks make the sharpest pick noise, and are almost too smooth/slippery, while the ebony picks are somewhere in-between when it comes to noise.