On second thoughts
I flew the 1-11, the CRJ and the 737, yes the P1 could take control whenever he wanted but was reluctant to do so, as it was drilled into the guys that the P2 flew the approach with the sole aim of doing a go round and the P1 took control only to land. It was getting the P1 to take control at an appropriate point before MDA/DA when the weather was nice that proved to be the problem.
There was one distinct advantage to the monitored approach though, so I must accept it had some merit! I could finish my breakfast on an early AMS while my coleague flew it for me.
Happy days!