Couple of things that stand out to me.
1. The draw looks more complicated than a standard iwb type draw. Looks like it could easily fail under stress.
2. They say it works from any drawing position, yet they only demo it from the appendix. I think the draw would be even worse to execute from another position.
3. It doesn't seem to lend itself to allow for a consistent "high tang" grip in the draw, which is the foundation for a good combat grip. Not having a molded section that consistently locates the gun in the same place would be of concern to me.
I'd personally pass, but if someone does purchase one please post a review.