Hi Daniel, : )
Smart solution indeed! I would even use it for photo shooting as there's no risk of the camera ever falling when the hands are busy with something else, like a change of lenses and the like.
My only concern would be the shake that results from the bodily moves / turns of the cameraman. SSS may assist there though. For an A55 with an articulated screen it should work just fine.
Good work! : )
Thanks for sharing,