I do them a bit different from you, but not too much, and your tutorial is plenty good. I think if I do one, I'll do it strictly with hand tools, the poor man's way, excepting the sanding. Gonna use a cheap belt sander, since that shouldn't be too hard to come by for the folks without tools.
I was kinda thinking I'd want the scales to go to someone who doesn't have your obvious skills though, and actually needs some new scales to replace their Grivory. Whattaya think? If I send em to you, would you be up for making some for another BH member who needs new scales?
I don't generally do the wood carving of the holes either, not having wood carving tools. I usually just leave a large enough hole for them to sit in.
The other thing I do is use stain and a glove to help guide my shaping, so that I can get it to be as comfortable as possible for a hand. So mine tend to be a bit more comfortable for the dominant hand than the non dominant one.