1) To make the wood more manageable, I split off all the sapwood before taking it to the bandsaw. Some of it is in nice little rectangles that wouldn't be much trouble to cut up. They would be small and require gluing to get anything useable. Is it worthwhile; is the sapwood any good? If not, does it make good firewood; does it rot quickly or is it stable? I have all the firewood I need for a few years, but I don't like the idea of it going in a landfill.
2) Several of the pieces I cut are quartersawn, and are quite pretty. I have never seen QS walnut at retail. Is there a reason for that?