Not quite certain what to think about the T-stop values listed by Cinoflex. Last time I read up on the topic none of the manual Nikkors had the exact light transmission the mathematical f-stop values suggested.
That and the quite horrible prices they list for their red anodized aluminium parts makes me think they are a brand for video hipsters rather then anything seriously considered by professionals. I don't have a clue about videography so I might be wrong.