Both hands on flight controls after V1 - tradition, myth or technical fact.
It is generally accepted wisdom that the PF should keep one hand on the thrust levers during the latter part of an automatic approach with auto-throttles engaged. Presumably this is because of the remote possibility of an auto-throttle malfunction.
That being so, why is the PF required to remove his hand off the thrust levers at V1 in order to rotate with both hands and therefore run the same risk as above of an auto-throttle malfunction. What is the perceived problem of conducting a one handed rotation and having the other hand guarding the thrust levers? Is the two-handed rotation a mere tradition in the airline industry, or is there a technical reason. And please don't say it is because it's easier to keep the wings level...