I've used the camera flip bracket for my three digital cameras: Kodak DC290, Minolta D7Hi, and now with my 20D. It's simple, light, and performs its task quite well.
I prefer to have the flash fixed to the bracket, not flopping around. The fixed horizontal orientation of the flash head can create some vignetting at the bottom if used under 4 ft. with direct flash, but that problem is eliminated by tilting the flash down or by using the DIY diffuser I referred you to earlier.
http://super.nova.org/DPR/DIY01/
When shooting I don't hold the camera by the bracket. I cradle the bracket/camera as I normally would with my left hand, bracing my left elbow on my chest for support. My right hand is on the grip of the camera. So ergonomically there's very little difference between shooting with or without the bracket. When not shooting I don't carry the camera by the handle either. It balances much better when grabbed at the top up where the flash is mounted. I also use the bracket on my tripod. Being able to flip the the camera on the bracket instead of with the ball head provides several more inches of height.
If you decide on this bracket I'd recommend you also add a quick release system. Mounting the camera via the tripod screw is very awkward, best done with three hands :-(.
I use a Wimberly QR system, which is bit of overkill as it cost more than the bracket. I also had to replace the knob with one from their macro bracket that didn't stick out as much. In retrospect I wish I'd used the cam lever RRS QR or the Bogen QR system which is more reasonably priced.
CG