It's an excellent question, but I think it goes to the basic role of parliamentarians and review bodies. It's hardly up to me to say what the roles are, but I think you would agree with me that the key roles of parliamentarians are to consider, and if appropriate, pass legislation and to hold the executive to account. The role of review bodies is to carry out the instructions of Parliament in their respective fields.
I would anticipate that if that same philosophy were to carry over into this proposed committee of parliamentarians, it would probably not be the wish of the committee or any such committee to duplicate the work by conducting detailed reviews on specific matters, but rather to consider, for example, the issue that has just been raised today, that is, the question of what access should police have to supposedly confidential material on cellphones, to encrypted messages.