Regarding the timestamp, a dedicated column generated by the database from uuid_extract_timestamp() can be very practical in Django. It is written at insert time by PostgreSQL, defined declaratively in the model with GeneratedField, and handled entirely by the ORM without relying on triggers. It also makes filtering, ordering or using the Django admin faster and simpler, since querying on a proper datetime field avoids extra annotations or computation on the UUID expression.
If you have a reference for UUIDv7 support in MSSQL I’d really appreciate it, ideally from the official documentation. I’m also curious to know from which version it is available and whether the current Django MSSQL backend exposes it already.