I remember many moons ago flying a sector on an old classic 747 with a captain who was a senior checker, also in the observers seat was an even more senior checker who was doing a surprise standards check.
All went well until after shutdown when my captain says that I should have had my heals off the floor during the final part of the approach, his reason being so I could apply manual breaking quicker after touch down.
I disagreed (insulent FO) and after a bit of discussion, the standards checker intervenes and says he believes that my method was the correct one. Happy days ........ off to the pub for a beer. BTW full marks to the captain, he did not hold a grudge.
Now what is the preferred method on the Bus types, I have no idea!