Jim Lee (J&D cues) has some and has used it several times. He sent me a nice piece and it was easy to work with and sable. He cored it with 3/4" maple and I would do the same if I used it again.
I saw a cue a while back that the builder used black stain on the Redwood burl and the finished results were beautiful. The stain didn't soak into the burl and left a black and red on fire look. I think it was a Mike Bender cue.