A friendly Autoblog warning from our own Dan Roth: Trying this out a couple times probably isn't going to grenade any gearbox that's in good shape, but you really shouldn't make clutchless shifts a regular part of your repertoire. While fine for a racing-duty "dog" gearbox, it's torture on the synchros in your street transmission. The inevitable grinding you'll perpetrate on the transmission while practicing clutchless shifting also means more particulate matter floating around inside your tranny. Think of it as a neat parlor trick, maybe try it out in case you should ever have a problem with your clutch actuation system, but otherwise, treat your gearbox with love.
Hit the jump to watch the video.