I didn't read the whole article as I'm at work. However, page 2 of that article shows a chart which suggests the GTX 295 does have Hybrid abilities. They've got a check mark in the box for that feature.
But, again, I didn't read the whole article to see if they found it simply didn't work.
Then again, I wonder how well a Dual-GPU unit would scale with an integrated low end motherboard based GPU anyhow. Basically have a Tri-SLI setup that way.