Apple Watch: Will it live up to expectations for the man or woman on the street?

Just inside the Apple Store in London's Covent Garden, there's a row of people peering inquisitively into a glass case containing a dozen or more watches, some with brightly coloured plastic straps, others with a much heftier bling quotient. For customers used to getting their hands on Apple products before buying them, that glass case represents something of an annoyance; the Apple Watch is, at least for the moment, tantalisingly out of reach, untouchable for punters wandering in off the piazza.