I have the SVC ones. I have to say that they aren't great (cheap construction inside and plastic lens) although they look OK and light up the number plate.
They don't look out of place, they're solid ali construction and light the plate up OK. You can also space them far enough appart to allow a standard plate in without fiddling around with it:
Thanks, eveyone for all your quick feedback and suggestions.
I personally prefer the look of the Lucas style so now I have to decide whether to fork out for the real McCoys or the cheaper copies?