Anyone who switches fuel tanks immediately before takeoff or landing is a fool. Sadly, a checklist-compliant fool.
Long ago, I modified all of the checklists in our little fleet. The many mods included:
ENGINE START: Tank that will NOT be used for TAKEOFF.
PRE-TAXI - Fuel Selector: Tank that WILL be used for TAKEOFF.
PRE-DESCENT - Tank that will be used for LANDING.
Those plus an emphasis of the necessity to turn the electric fuel pump OFF after starting the engine - LOTS of pilots (and instructors) miss that one.