It's an interesting trick... similar to getting a bear to ride a tricycle.
But tactical value? It's tough enough convincing a lot of people that throwing a blade has any intrinsic value...and then we see a guy kicking blades into a target circus-style.
Yikes. By my count, it takes him three seconds to do so. I hope he admits that's purely show demonstration, and doesn't think it's a serious training drill.
Not that throwing blades is solely about tactical application--I know a lot of people do it because it's freaking fun. But the Systema guys aren't about fun, allegedly. So what are they claiming with this?