IMO the McCluskey sighting, the Smith sighting, and the JT sighting, are all irrelevant.
All open carrying sightings are irrelevant IMO - it would be contrary to all the instincts of a perpetrator.
The Hatton Garden crooks were low IQ but even they didn't carry armfuls of gold openly along the streets of London did they?
Yet the whole of this PDL investigation is focussed on that farcical assumption.
The McCluskey sighting was investigated and the incident and the people involved checked ... therefore it may indeed have been irrelevant.
The interest in it lies in the fact that people who witnessed a child being carried would as a result probably pay a great deal more attention to how the case developed than most.
After months of negative press reports and after months of viewing the McCann family these witnesses became reluctantly convinced when viewing exactly the same news clip that the man they had witnessed carrying the child was the child's father, the man whose image they had been exposed to for months.
The wording of what they made of that in additions to their original statements is remarkably similar.
Whether you think it farcical or not, witnesses saw what they saw in three separate sightings, only one of which was effectively ruled out at the time.