I tried out my new Yumi and it works well. I was worried that the light weight bamboo would not be able to really cut through clay as well as the metal one. I was wrong. It does a great job. You do need to hold it a little differently that you do the metal one. This lighter version has a place to rest your pointer finger, which gives you the correct pressure and leverage. Works nicely for faceting as well as for other jobs such as cut outs, handles and cutting into places you couldn't clean cut otherwise. Check out the video.
I also am testing a few new glazes this month. Will report on them - next post.