To some extent, (ordinarily I'd say to a LARGE extent), when you commission an SFO you define the quality, and what departures are acceptable. In my past experience, most of the UK dealers don't even look at the knives they receive from Wright's, before shipping them to customers. Where a dealer takes more of an interest, being willing to pay for better quality materials, and refusing to accept sub-standard knives, their customers are far more likely to be happy with the product they receive
Yes, definitely, particularly if you're ordering from overseas, and it's not easy to return a lemon