Jakearoo,
Probably, but, an English best with non-original barrels is going to be a tougher sell then most things.
Look at Thorny's post, and, understand, he hasn't fired a box of ammunition through ANY of his doubles. And, when it comes to big money guns, he is far, far from the only one in that boat. Since these guys 'ain't shooting them, they have to come up with reasons of their own for having them, and the whole, "original" or "best" thing comes into play-'sorta like the Corvette guys, with Bloomington Gold certification, and, whatnot. Hey, whatever. Since these guys will turn their noses up at even a superb quality rebarreling job, that leaves actual shooters, more concerned with use and performance, to purchase these guns, typically at less than the cost of the new barrels.
You 'gotta understand, some guys will do anything to impress the chicks. Just me, but, I've always thought it was better to impress what you were shooting at. And, do that without impressing my wallet any more than necessary.
It is only a "my toy is bigger/better/cost more than your's" thing. A well used Purdey, or, for that matter, Parker, that has had new, quality barrels put on it, can represent the buy of a hunting/shooting lifetime. It could also be junk, but, our hero, Dan, has hired good help to sort that all out.
Patience, will bring good things his way.
Best,
Ted