I'm not saying there will be 2 PIC's!
Come on, this is obvious, all I'm saying that being a commander, decicion making mechanism works like second nature!
Having two decicion makers in the cockpit creates potential clushes in case something goes wrong!
It's easy to wear the hat of the PIC when seating on LHS and the PNF hat when on the RHS in a normal flght but when the sXXt hits the fan I'm really not sure how somebody would react!
I personally have my doubts about this!
Again I admit the necessity of this arrangement in certain occasions but not the implementation of such a practice to address seasonality issues!