Reproducing the Bvlgari sunglasses shoot

When I last posted, I was ruminating upon how the Bvlgari sunglasses photo below was done.  My lovely wife volunteered to pose for a few shots so that I could try and figure it out!  Here's my shot:

I used three lights: a narrow 3"x1" softbox for my main illumination, a regular 4"x3" softbox for fill, and a strobe shooting through the black background paper to make it appear grey.  Shot with an 85mm at f/5.6, 1/25 sec shutter, ISO 200.  This was a tough shot to try and reproduce because the original shot is mostly shadows with just a few bright areas.  I think the end result looks pretty decently close to the original.

There are some things that I'd do differently if I were to do the shoot again:

• Use a brighter key light and just underexpose a bit, so I can get a faster shutter speed.
• Rather than have the key softbox close to the model in an attempt to use the softbox itself as the flag, flag off the softbox.
• With a brighter light, I can use a smaller aperture so that her necklace will be in focus.

And yes, I know these sunglasses are the wrong brand ;)