The SIN includes both photo, dimensions, and some biometrical data, but they have been customised for Omar. Unless they sample him with DNA or blood tester he's matching the description - changing photo is easy enough to be done quick while you were eating pasta.
The SIN state that Annibale Mancini works in Bianchi & Esposito & Partners a respected lawyers company that has many times helped Family members that had been unlucky enough to be caught at something.
While both Bianchi and Esposito are real lawyers, Annibale Mancini is creation of Dean made specifically for this purpose to allow people into police stations as representative for his attorney. He had some three generations old italian roots, but he himself is an adopted child of Maria and Fernando Mancini.
He is now a Subject Matter Expert consulting the Bianchi & Esposito company in complicated cases.