Tried it. Outside of very specific situations, it doesn’t work. It takes up multiple feet of board space, it can’t manage terrain at all, it cannot wheel worth a damn, it gets in the way of the rest of its army, it can’t defend itself against multiple chargers. It looks fantastic in 1 unit vs 1 unit mathhammer, but that’s not how armies and army construction works.
If you’re daft enough to feed it one unit at a time then sure it’s effective, but it has no way of enforcing that. Much more likely is it’s lack of manoeuvre is taken advantage of and it gets multi charged to hell - where the chargers also have the advantage of ranks, multiple close order bonuses and enough numbers to prevent FBIGO too.