Adapter turns your fancy $5k Leica lens into a handle

Adapter turns your fancy $5k Leica lens into a handle

Taking great pictures requires that you keep your camera really steady. But does it make sense to use your big dollar Leica lens as an extra handle?
The Leica Lens Holder fits on the bottom of the high-end camera maker's M, MP, and M7 models, and provides a bayonet mount where you can attach an additional lens. This has a double benefit, because in addition to giving you a better way to support the camera, it provides a place to carry an second lens without resorting to a camera bag.
Is this really a good idea? I realize that most photographers use the main lens for support when shooting, but does it a good idea to use an ultra expensive high precision tool as a handle? The Lens Holder is a genuine Leica accessory, so I guess their answer would be yes.
The Leica Lens Holder is available now for a little under $200. PHOTOS