ok, so ive been using this for a week or two and its beautiful.

every 12 hours, if my phone and computer are on the same network, my SMSes are automatically backed up, de-duplicated, sorted into files by the contact, and committed incrementally to a private git repository.

on the restore end, i run a quick script and i get messages received in the last 30 days {or the last 5 messages per contact if there are no new ones} in a neat little file for importing.

this is everything ive ever wanted, ever, for SMS backup and restore. thanks a ton.