I like the idea, but would want it twice the size. This doesn't look very stable. And does it have to have that flashy color? Gimme army green or airforce blue anytime!
Great to have around for a P&S. But an SLR is just too front heavy. It will balance my 30D with the 50mm...barely...but that's about it. Now, if you had something else to place under the lens, this would be good to keep you from having to set your camera on the ground...if that's a big deal?