2-part vise/edge clamps - video

2-part vise/edge clamps. By Threadexpress. 36:00 video:

https://www.youtube.com/watch?v=0ki2gCm4QWs

If you clamp them to the bed facing each other with the jaw faces touching, as one jaw is tightened, wouldn't the other one be pushed up away from the bed? The Geradi has the tapers the opposite way to solve this issue.
Attachment 49483