The thing with PMQs is blokey northern won't cut it. He is not just speaking to the PLP, or parliament or parliament plus viewers/listeners, he is speaking to the markets, investors etc.
His every word is scrutinised to establish if the UK is somewhere worth investing in, how much the country's debt should cost (are we a safe bet). I know Burnham doesn't care much about the bond markets etc, I suspect he soon will do.
As for Harman. What a load of absolute nonsense. Claire Coutinho is good at her job that's the reason for promotion. Labour pretending they are the champions of women, when they let men on all womens shortlists is an absolute joke.