Hi Doremus Scudder,
Thanks for your comment. I started doing the procedure because with papers like Ilford Multigrade IV, you can't see any color change. With warmtone papers I don't like the split toning, so the procedure works fine so that I stop the toning before it split tones. What paper are you using that you can see the difference as you tone? It was nice when you could see the color change on the papers many years back.
The selenium toning for maximum black works well on portfolios, so that all the prints match. My videos are aimed also at beginners so that they can get good results by testing and not go through all the trial and error like we did originally.