DB,
I am a NPPL of a few years and a very keen model aircraft flyer so am fully aware of the points you raise.
These damned drones are causing legislation that would virtually ban model flying as it is enjoyed today and would love to see them banned. However seeing an object but not really knowing what it is is not going to make a very good case for restricting or banning them. I realise the difficulties that these high closing velocities can bring but can imagine how a comment such as "could only have been" in other words "I am guessing" could be taken to pieces by the pro drone group.