Don't be fooled, that's a very soft blade in that video, it would be a noodle in the water.
I actually used it and thought it was real good, although I was just kicking around a 100 foot long, 20 foot deep pool. Next time at the pool, I want to hook myself to one of those hanging spring scales and see how many pounds of thrust I can generate. Of course, there are a number of flaws with this "experiment," but I maybe any noodle fins would be outed by it. In the pool most of my fins felt good, although the HSD carbons were significantly stiffer (maybe a good candidate for tendon-less pockets) and the Pierre von Eecke's were a lot softer (not quite a noodle, but they might feel that way if dragging an ulua up from 40m). What was the fin in your video? You forgot to put in three minutes of still photography to burn the brand into my retina.