It will be interesting to see if they work, however if the glasses are running at half the frequency, then they will be "open" for twice as long, therefore your eye will see both left and right frames. So no, it doesn't make sense. The halving of the refresh rate means you see a 240 fps (equivalent) image per eye, although your source will probably be running at 24fps. This simply means less flicker and a brighter image, nothing to do with image movement. Let us know how you get on.