Mike,
Over the last few years I've contemplated this in regards to my forever stalled Nieuport batch build. Like Dave, I'm a Noop fan, and I've considered several ways to accomplish this. I've seen folks use Alclad without spraying it over the gloss black primer with interesting results.
Something some of you might try that I was going to do, and post the results here is this: get a piece of styrene, or plastic spoons, and spray one with Tamiya white primer, one with Mr. Surfacer (gray), and any other undercoat you wish to experiment with. I bet you dollars to donuts that you'll get a different effect depending on the color, etc. of the undercoat which will prove useful in recreating a variety of silver dope finishes.
These are just my thoughts, and it sure looks like I won't be trying it anytime soon (unless we do that French group build and then MAYBE my life will permit me some modeling time), so I'd like it if one of y'all would try it.
Warren