I picked this one up a few days ago from TD, as it was supposedly a "French Manicure" polish (and I'm currently obsessed with French manis), but I have no idea how one would use it as a French manicure polish, unless you use it as the tip or in a funky French.
That said, Golden Halo, is a gorgeous gold metallic with a heavy lavender cast, but it's not a duochrome. Like most metallics, It is a bit brushstrokey, but it's not bothersome, at all. In fact, it adds to the beauty of the polish, IMO. This one reminds me of the ChG Romantiques polishes in appearance, though there is nothing this unique in the Romantiques collection. This was 2 coats and I had no application issues. BTW, while it's pretty in the picture, it just doesn't do this beautiful polish any justice. It's definitely a "must see IRL to fully appreciate" polish.
It's a very different polish. I mean... it's a golden lavender or a lavender-gold (whichever you prefer), so it will definitely appeal the those of us that like our polishes to be a little out of the ordinary. That said, it is a lighter polish, and it's not "in your face" with it's unique-ness, like say a bright green holo would be, so it's not too crazy for most mainstream nail polish fans.
This one is d/c'd according to TD, but still readily available through e-tailers. Sally's may have it as it was (is?) part of the Orly French Manicure line, but as I haven't checked myself, I don't know for certain. Hope you girls like this one.