With all the mixed reviews, I'm seriously considering cancelling my order (bought it from Henry's website, but it's not returnable) and waiting for it to be more widely available with more reviews.
check this out
A retailer in the UK has rejected an entire batch as too many of them were faulty.
The good examples are damn good, a worthy successor to the non VC version. However this is let down by initially poor quality control from Tamron.
I would hope that they sort this soon, but I have to say that once it is sorted and you get a working copy you'll love it.
I have noticed nothing of what that review states to be honest.