My lens is a de-clicked, but not one of the new CINE version, which have the fluid aperture adjustment as standard. This feature is absolutely amazing for video work. The standard version one has a clickable aperture adjustment and you would have to get it de-clicked to achieve the fluid adjustment.
By the way the footage of the lens in the video above was shot with a lovely little Sony NEX 5N, which I now constantly use as my slow mo and b camera. Used it with the Samyang too, work great!.