You have a better use for Tech override than instant concussion round? I love it personally. Sad that its the only way our mez has any real use in PVP.
I use it paired with Healing scan when in trouble or Fusion missle as an opener. No use do it with Concussion missle when any damage just breaks the effect or affected player just uses his CC breaker. Not to mention you have to choose between Electro dart or Jet boost afterwards because it fills the targets resolve bar to full on the second CC which is quite bad when fighting a melee.