Robert, I'd really like some data on these schools since you know them. Who are they and what are their needs really? Why do they see this as a blocker?
I've not seen it as a blocking issue because:
a) Moodle 1.9 courses can be restored without user data. This addresses the bulk of teacher's needs to restart courses from saved templates.
b) Moodle 1.9 backups with user data can be converted to Moodle 2.0 backups with user data via a workaround - restore to a 1.9 site, upgrade the site to 2.0 and then make a backup.