For anyone interested I've now found out that if you're tidying up the interior in your MK3 GTI and want more leather, for example you've fitted leather seats, the leather handle handbrake from a VR6 will slot straight in.
You don't need the VR6's centre console, the GTI one will work fine. The VR6 handbrake has a black button at the end with the handle section covered in leather and a black plastic base/cover below this. There's no gaiter, leather or plastic.
They look a lot smarter than the standard plastic covered handbrake and work well with the rest of the 'highline' interior.