Nice to see there are some civilized peeps on C5 most would rather argue than "agree to dis-agree" or insult. Cheers to you.
I think your vehicle looks aswesome with the wing in my opinion because the overall vehicle design and style is over the top to begin with, so adding the wing justs adds to the theme and looks quite natural.
I have an SS with GFX, but don't think I could get away with the wing on it, the Havoc spoiler is as radical as I could possibly get, again that's my opinion.
I'd really like to see different viewing angles of this wing on "plain" everyday SS with GFX, perhaps then I'd change my mind.