>>2999400>>2999400>>2999400With a WLF you can hold the camera waist level, pushed against your pelvis, and shoot while looking down. Your arms are at a relatively rigid position and your hands cradle the camera.
With a prism you're holding the 5lb+ camera in front of your face. Your arms are not able to be nearly as riding in this position, and your hand movement is a bit awkward. Go walk around your house with a 3/4 full gallon of milk occassionally holding it up to your face while cradling the bottom of it with your hands.
For real though, if youve never seen one in person try to find one locally to check out. Its not unmanageable with a wlf, but shooting handheld with a prism would suck. I know because I've done it.