This script, like many others before – and I am sure after – it, suffers from similarity of characters. Although artistic and more-or-less functional, this script would likely undergo significant changes over a given decade or more of use. I like the aesthetic, and it appears to be based on phonological relativity, but it simply isn’t practical. I fail to see how it could be used to write English, or German, as the author claims, but I also only did a cursory examination of the presentation.
All said and done, I give this a 2×4 for aesthetics and functionality.