Choson Ninjutsu is seen as fake in Japanese Budo circles. From what I understand the style never existed and certainly is not practised in Japan - So I would take that clip with a grain of salt.
Here is a demo showing real budo - it features Jutte with Tessen as practised in Shindo Muso Ryu( Ikkaku Ryu) a style some 400 years old.
http://www.youtube.com/watch?v=pu38C...eature=related
http://www.youtube.com/watch?v=xTeaU91MtV8
edit - I have added a different clip to begin with which shows the tessen better, same ryuha (school/style)