I've noticed that the shared-use footway up Gogar Station Road has been treated with slurry seal, as has a section of footway at the west end of Morningside Drive.
The result is what was a relatively (in the case of Gogar Station Road extremely) smooth pavement has been converted into something that's rough and extremely draggy. The hill up Gogar Station Road is now considerably more difficult to ride, and the pavement on Morningside Drive is much less attractive for scooters and wheelchairs than it was.
Have you seen this applied near you? Is it a city-wide thing, or just a local experiment?
Here's a video, in case you're wondering what it is