I wasn't suggesting it was, I was suggesting it could be considered a 'point'?
But wouldn't that be the same as if you were stopped whilst carrying a crowbar and you being considered 'going equipped'? I know (hope) the context should make a difference (when everyone is being reasonable), so like if you are stopped whilst coming out of your mates house that you are both rebuilding versus a young hooded 'youth' stopped at 2am (who could also be perfectly innocent of course).
As you say, as long as there is the 'onus of proof' rather than just circumstantial then most reasonable people acting reasonably should be ok carrying a 'pointed' nail file on a multitool. ;-)
Cheers, T i m