The utility is extremely good. In fact, it may be too powerful for this game, no one knows yet. My comment was solely on its cost. No matter how good it ends up being, it costs half a kameo, 2 bars, and it's locked behind a flawless block. In total, this costs MORE than a breaker.
Idk if this game needs a pushblock mechanic and honestly I don't think NRS knows either. If they wanted to make it viable they could. As it stands right now, it will never be used and it's maybe for the better.
This opens up a whole new discussion on how strong offence is in this game but I don't think the answer is giving everyone a universal pushblock tool. I think they should buff the defensive characters first, and see where the game lands.