That video is the older system, as John points out. It seemed pretty fast to me, but he still kindly sent the upgraded valve assembly.
I liked this work one enough I bought the new MLV-Y model with my own money.
It's a smaller and lighter, I like it a lot:
The idea of an indicator light though is a good one!
BTW the first faceplant was just posted with the MLV vest, seems to have worked very well: