I like the pull rod within a recess Keno and copper idea (patina would be nice too, but maybe messy)… though it does look a bit like an, um… penis.
Though I suppose none of these are really ADA compliant…
All the concepts with arrows and hands I find don’t really work. Hand looks like the DO NOT ENTER symbol, and arrows don’t really show push “IN”, more like UP or DOWN depending on orientation.
Not really the question, I suppose, but isn’t the best solution just a door with double hinges that can be pushed OR pulled with some kind of double purpose bar? Or Star Trek doors that woosh open magically? 
R