The glass is a must have for real coin workers. Search all you want, you probably won't find it.
Whether you use his routine or not, the glass is useful for any coins across or coins through the
table. Plus, the construction of the glass makes it very easy to hide at least 4 coins and
seemingly have empty hands. So it enables a coin product as well.
This is more for
intermediate coin folks, however a very diligent beginner could work this out. It will just take
time. I would agree with others that said you might want this after you have spent some time with
Bobo's.
That said, it is a great routine, well constructed and the glass does help scale
up your performance.