Another thing that works very very well is timing the 1st dot in front of the putter to the last dot before the cup...(he explains it in the 2nd video I believe)
Even though I don't use Teks system much anymore, I still have putts that just don't look right when I figure the break, and that 1st dot last dot technique is usually spot on...and as you said the putter shaft line is a great too(don't forget you can also go into chip mode and line up with the wedge shaft on bigger breaks)