Well, it's such a nice knife that I have not used it a lot yet. But blade is very sharp, and opens, locks and closes well, and it feels good in-hand. I was a little surprised by the quince also, so did a little research. Apparently quince has a history in knife-making. Here's a link I found:
It offers a range of rich, warm colors and a fine texture as well as excellent physical properties that make quince wood the perfect choice for...
www.bokerusa.com
If I remember my conversation correctly, there is a decommissioned sawmill somewhere in the area, and the blade stock comes from there. Don't know anything about the steel beyond that.