I didn't say P. esseriana didn't produce pollen, just that it isn't viable, ie. no one I've heard of has managed to pollinate successfully with it, at least with the common clone that most people grow. I have recently received another clone of this species, P. esseriana 'Giant', I'm not sure if this has sterile pollen as well.
I've never found it necessary to remove the lobes from a Ping flower in order to pollinate it. How do you ensure that you don't accidently self the plants? This isn't likely to be an issue when P. esseriana is one of the parents though.
Keep us informed with your progress and good luck!