Mixing PCCB rotors w/ iron rotors?

[cfjan]

My front PCCB rotors (from my 996 GT3) are being replaced with iron rotors. My question to the group is, do I have to change out the rear as well? The shop that's working on the car wants to change out the rear too (understandably for liability reason, I assume).

Does anyone have experience running front iron rotors w/ rear PCCB rotors?

I mean, there's really no "magic" involved, right? Friction is friction. As long as the rear is not overpowering the front (that would create instability), I don't see how one can't mix the rotors. (If anything, the pad materials would be more critical, as one can run pads w/ higher and lower friction rating to change the bias)

Thoughts?