We are given the option to do the procedure from memory or to use an aide memoire. Most if not all of my colleagues do it from memory just like with the ‘old’ procedure. Actually I now have to stop and think when for whatever reason we are using the APU to start the second engine since, I’m not so used to that flow anymore!
I’m not too worried about forgetting the Y electrical pump. If anything, it tends to inadvertently switch off once the APU shuts down on certain airframes (due to the electrical power transfer), which is the only real issue I have noticed with this new procedure.