Christopher Schwarz had a blog post today about the notched batten and Richard Maguire, it was short but to the point and worth a read. Plus there is a link to Richard Maguire's video using a notched batten. Even if you have watched the video before, and I expect most have, it is worth a re-watch.
I've been using notched battens for awhile and their use has allowed me to eliminate the tail vise on my current work bench. Cheaper to build and faster and simpler in use....what's not to like.
Here it is in use: