I think a bit of promotion is a great idea. If this bit of path has a large uptake then it will really help the council's arguments when they want to build high quality infrastructure elsewhere.
@fimm, Perhaps enough people will start using it that they could justify a segregated paths along Queensferry and Maybury roads.
Personally I only run for leisure so wouldn't consider this a pleasant route for a run as it's straight down the side of a dual carriageway. It's a great A to B route but if you're out for a leisure ride/run there are much more pleasant routes in Dalmeny.
Incidentally if anyone fancies a little off tarmac excursion during the current diversion this alternative through Dalmeny is available (There is a gate on it but it's not locked):