This model was one of the early versions. It was designed to be used more with a metal lathe than a wood lathe. It will work ok on a wood lathe, but feedback during the testing phase was to go to a wider handle for the production version. The newer production versions have a wider handle, so there is more contact area on the tool rest which gives it more stability. I have 1 proto version, and 2 production tools. If anybody has any questions about the tools, just let me know.
I'm not trying to take away from Ben's post. But just want to provide a little bit of information about the differences in tools.
Brian