If the latter, that could be cool, but if the former, then not as useful, as it is with DataMapper & Sinatra I'd really like to use the postgres db.
But the postgres-pr is a fine compromise for the time being, cheers! I'll use ActiveRecord with Sinatra, and see if I can change to DM somewhen later, maybe when there's a new release.
Thanks a lot for your help!
Doug.