Apparently Tyler is still accepting orders, but stopped shipping product many months ago. There are several and long threads at the S&W forum about this.
If you need a grip adapter for a J frame Smith, a fellow at the S&W forum has started making them from resin, he's marketing these under the name of B.K. grips, and all of the reviews so far have been very good. I'm still waiting for him to make a K frame adapter.