As you know Robin, I love all things Carbon Fibre and OSIR products are no exception. I've debated these for a while, but I decided against them as they overlap quite a bit of the central design of the car. Otherwise I'd have had them like a shot. Still look gorgeous though
....I know exactly what you mean about these OSIR panels extending further than stock towards the central design element, and that very consideration is what stopped me for a while. But now I don't feel that the overall look is radically changed because you still read two black 'vent' areas - In fact slightly bigger and hence more aggressive ones [bigger boobies].
Having said that, I don't think that these would suit your silver GTI because you have that very subtle silver CF and it would look odd (imo) mixed with black CF. Colour coding silver or having them silver CF would radically alter the front look of the GTI as this red example shows : -
Although when making side by side direct comparisons between my modded GTI and a completely stock GTI, there are many differences, I have always tried my hardest not to destroy its original design integrity with my body mods.