That last review, while very favorable, left a lot to be desired. The reviewer kept talking about the sharpness level from F5 .6 to F11, completely neglecting the fact that most people who use this lens will rarely use it at those apertures. He also concluded, "that the Tamron offering in this case was more expensive than either the Canon or Nikon equivalents." I don't believe that this is true in any of the markets that the lenses are offered in, and definitely not in the North American market. He didn't mention the shortened focal length that Roger observed. I didn't find any of the image samples that he offered really gave any kind of true picture of the capability of the lens.
I am looking forward to a review from someone like Bryan Carnethan. I'm also looking forward to a head-to-head comparison between the new Tamron and either the Canon or Nikon equivalents.