How many people know that JS rode a Carlton? I didn't, neither would I care.
Carlton enthusiasts, in the main. Bikes advertised as "Ex Savile" went for a premium if the claims could be corroborated. I expect any documentation has been quietly lost now and they've reverted to normal Carlton status.
Indeed, just before the sheet hit the fan one bike shop - I don't recall which - paid a fortune for a Savile machine to go on display. A few weeks later their investment was not only worthless, but not even displayable because of the risk of vandalism.
So it seems the very people who would be most likely to buy Carlton's today, the enthusiasts, are all too aware, and sales would likely have suffered just by the association. Like Aids. After all, if the public didn't take notice of slebs and brand affiliations then manufacturers wouldn't paybthe same slebs millions to be seen with their products.