Sigma 150 f/2.8 macro experience?

Anyone had any experience with the new Sigma 150 f/2.8 macro?
It says here: * Nikon mount of this lens is not equipped with an aperture ring, therefore, depending on the camera model some functions may not work.
Has anyone used it on a D70s?
Any help would be greatly appreciated, as I'm looking to purchase this lens.
Cheers
Marc
It says here: * Nikon mount of this lens is not equipped with an aperture ring, therefore, depending on the camera model some functions may not work.
Has anyone used it on a D70s?
Any help would be greatly appreciated, as I'm looking to purchase this lens.
Cheers
Marc