Would reflective vinyl work as mylar or no?

Any one ever thought about or used this stuff?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&Item=180327895746&Category=46742&_trksid=p3907.m29&_trkparms=algo=LVI&its=I&otn=1

curious to see what you all might say... Im not sure if id eat the light or reflect it.

it might not be as effective as mylar, but if u decide to get it i would wear sunglasses when handling your plants. i almost got a glare from that stuff just lookin at the ebay page.