Why is Mark on as the brand ambassador for Skagen? We have previously been led to believe he is a jewellery expert. There is a technical difference between an gemmologist (him) and someone who has a particular interest in watches, or an horologist. At least if the guest is, basically, someone who either works for the company, or is employed by the Q to guest the product, we know what we're getting. This is where QVC, imo, get it terribly wrong. They try to convince the viewer they can trust a guest who is a specialist in his field for that very reason : because he is giving us his opinion on the product being sold. If a diamond ring is being shown, and the guest comments on the quality of the stones, we are expected to have faith in that opinion, because that is his specialty. In this case, Mark is now also an experienced watch guy. Personally, I have a policy that I don't completely trust everything a guest says; both the guests and the presenters, as has been remarked upon frequently on this site, are sales people. Even if they do think an item is utter cr*p, and we would be total idiots to buy, they are not going to tell us that. Caveat emptor, as with anything.