Slick
Guru
I did it regularly on about a 50m section of pavement to get on to the Erskine bridge without interrupting traffic joining the M8. I still do it on my new commute on a slightly longer section. The alternative is cycling up hill on a dual carriageway in the fast lane to negotiate a right turn on a roundabout. I know that I should be able to do that, but my risk assessment tells me to remove the risk entirely and cross over on the pedestrian crossing and do a short burst on the pavement.
They should do it properly and rebuild them so they're consistently wide enough and don't have any of the blind corners or turn-on-the-spot bits that pavements often have. There always seems to be money to enlarge roads but rarely money to build cycle tracks.