It is a very impressive machine, but is not a cascade (slide) coater. The hopper shown in the photo is indeed an extrusion hopper capable of only one layer at a time, unless two or 3 layers are fed to the hopper at one time. This cannot be determined from the photo, but it surely is not a classic slide hopper.
The coating speed in this design would be limited to about 10 f/m - 100 f/m on average. Did you notice that he is coating on Titanox, and so is making the equivalent of paper negatives but on film support.