Will tactical defending be optional

In FIFA 12 a new control system is included for defense, called tactical defending.

It makes the constant pressing that was used a lot in FIFA 11 impossible by the fact that you now only shield the opponent player by holding the button, but don't rush into him. The actual tackle has to be done manually.

Also the second defender you can call now won't directly attack the ball carrier, but also just shields him and covers up additional passing routes.

This makes constant pressure play a lot harder and less automatic, which I think is a good thing, but tactical defending is only optional and can be turned back to the old mode in the control settings.

I would imagine that playing with the old mode against the new mode gives you an advantage in defending, because you still can put on constant pressure play without much manual effort.

So my question is:

Is there any information how this issue is going to be addressed in online play? Will online leagues restrict this in any way? Or is it just for everyone to pick?

I'm asking because I want to specialize in one of the defending modes (possibly the best), and therefore it will be good to know if the new tactical defending will be mandatory in online mode.