For most of the uses on your "Purposes" page, you don't need the deniability, only the encryption. So this is overkill.
For the journalism uses, the product does not seem to be enough. When the authorities ask you to show them what video you've taken, you need to be able to use a secondary key that reveals your interview with the Ministry of Information's Official Spokesman, but conceals your interview of an opposition leader and your video of an anti-government protest.
Comments
For most of the uses on your "Purposes" page, you don't need the deniability, only the encryption. So this is overkill.
For the journalism uses, the product does not seem to be enough. When the authorities ask you to show them what video you've taken, you need to be able to use a secondary key that reveals your interview with the Ministry of Information's Official Spokesman, but conceals your interview of an opposition leader and your video of an anti-government protest.