buzz, for what it's worth, I agree with you completely except that I would want a much, much greater discount than 20-30% for the ST PG beavertail forend. A few years ago I was offered a relatively new, well-maintained H&H with the above configuration by the widow of the guy who had it made to his specs. She couldn't understand why it was hard to sell since her husband, an avid shooter, had it specially made. But the damned thing was pit-ugly and H&H explained to me, when I telephoned them about converting ST to DT, that it was simply not economical to try to do that - they clearly didn't even want to deal with the wood.
I may be all wet about this but if you want an "Americanized" gun, why pay the London premium? I'm sure others with more experience will opine, but personally I wouldn't touch a modern London gun that has been Americanized with a barge pole. An older classic might be different, but I've no experience with that market.
That little voice inside you that calls, "Caution!" speaks the truth!