...and the thing is that successful companies will only produce what the market wants (unless they have excess money to burn) and that means there are people out there wanting this sort of thing...ie I want a double rifle that will accept high power cartridges, I can swap over barrels to change cartridge easily, I have to manually cock each loading, won't eject and I don't care too much what it looks like...sheesh

Okay, they are a reputable company and the engineering is good in that you can easily change cartridges but lets face it, there's no practical improvement and there's a big loss of aesthetics. The classic double can't be improved on and should be left alone for reproduction only IMO.