Savin's biography is full of legends and stereotypes. New work of Dr. Totfalushin's, published in one of the "Sbornik 1812" (GIM), reveals new documents related to his biography. Saven never served in 2nd Hussard regiment (during 1812 this regiment was in Spain), but - according to his oral statement - was a sous-officer of the 24th Chasseurs a Cheval (Oudinot's corps). Please, make a note of it.
If interested, I could translate this document and send it over.