just want to stand up for the stoke bit of the caldon - its not that urban really - just the short stretch between hanley park and the lime kiln lift bridge - which is now not so much urban but just an unfinished building site. (Note the shiny new bridge that goes nowhere that has been put up for all the houses that haven't been built yet). After that its really quite green and pleasant. Walked along there the other day and saw a kingfisher and that was on the building site stretch so it is well worth it even before you get to the delights of endon, froghall etc