Is there an advantage to using the Reflector and the PhotoBlocker spray together?

Will using the reflector diminish the effectiveness of the Photoblocker spray?
We do recommend the use of PhotoBlocker Spray with the Reflector cover. First, by having the Reflector cover over the PhotoBlocker Spray you are actually doubling the reflective surface of your license. The more light reflected back to the camera the better your chances of overexposing the picture. Secondly, the Reflector cover will also protect the PhotoBlocker Spray finish on your plate from debris and U.V rays.