That would cost them a significant amount of money though, literally thousands of dollars for the airfare, hotel, rental car, expenses, etc. Plus, they would have to provide a setup that emulates a HT, and testing gear as well. It just doesn't strike me as feasible. In the past 3 years or so I've published about 2 dozen reviews, and I've never even heard of a company that does something like that. It's always much easier and less expensive for them to simply ship the product.
Which review was that for? Was it something in-wall perhaps?