I used it. It works just like classic Cetol but, honestly, I didn't see much difference in color between this one and Classic (though I used it over classic so may be that's one reason
It is exactly as easy to use as regular cetol, and on my boat I have a few large flooring areas painted that way (engine bay doors which are also my cockpit floor). Painted teak is not all that slick (I don't slide on it anyway).
Still, I don't know that I'd use it on an entire teak deck. Then again - it's better then letting teak weather until you have nothing left (and then rebuilding an entire deck