Laminating grey card

I recently purchased a book by Scott Kelby about Photoshop CS.
In the back of the book is a grey card. White, grey and black strips.
I was thinking about laminating it but I wonder if the shine of the lamination might make errors to the metering.
Any thoughts?
In the back of the book is a grey card. White, grey and black strips.
I was thinking about laminating it but I wonder if the shine of the lamination might make errors to the metering.
Any thoughts?