From what I've seen and heard I'd say Scottish lockdown travel regulations now seem to be widely ignored. This was always going to happen and non adherence will only increase in the coming weeks and months, the Scottish Government would be better acknowledging this and loosening those legal restrictions in order to retain a semblance of compliance.
Thankfully, as far as driving is concerned, any breach of travel restrictions only seem to come to light in the event of another incident - the police are not stopping people or routinely looking for breaches, e.g. Don't go out of area and get caught speeding or amber gambling.