As spy gadgetry is concerned, this one isn't exactly 007 smooth. It's quite the opposite, actually, in thatkind of way.
Although this product is presumably meant for covert activities--it's being sold on Spycatcher, after all--these "Spy Sunglasses" are basically a pair of shades with a camera stuck on the side, about as camouflaged as a snowman in a coal mine. It would go perfectly with the Discovery in the Department of Glaringly Obvious.
Besides, now that we can sneak a video feed with a pinhole camera, who would need anything else? But if you do end up getting the camera glasses, you might also want to consider another gadget for the inevitable lulls in espionage: You can always pop a " " onto the other lens and watch a movie.