It's all about efficiency Darran! Can't make thousands of them quickly if each one takes 9 hits
I've been playing with these recently, and speaking to people like Milos and Jeremy the general consensus seems to be get it white and press, turn, press and you're done.
I suppose one major downside is that by the time you've got the bar white the socket is in danger of melting as its so thin. Balancing act I suppose, just like forging any heads.