It would be cool if we could use Ext.sql to interact with
  • Google Gears (client-side persistence)
  • In Memory (if no SQL server is available on the client)
  • Adobe AIR (client-side persistence)
  • SQLite and MySQL (via Aptana Jaxer, the open source Ajax server)
like this project is doing with an ORM

(I don't personally need an ORM but I'd like to be able to use whatever client side storage a user likes gears, html 5 etc.)

see also for iphone: