From what I understand casting this prevents you from any quanta production(irrelevant of split), but your opponent gets some quanta from split(target one stack only).
Also it is very penalizing if used to block a weapon/perm other than Q producers.
Suggestion: target what to block and your mirror position perm gets the block too. Still meh but something to consider
As a denial fan I like the idea alot, but the penalty for using it seems a bit harsh.