AnandTech has written a preview of the Lucid Hydra multi-GPU technology, you can read it over here. After checking out the results it becomes clear why MSI had to delay the Fuzion motherboard, the reviewer reports his testing experience was a mix of failures and successes. Not a single game worked perfectly in all cases, there were issues of graphical corruption and the performance wasn't that impressive. Seems like they still have a lot of work to do on the software side.
Here's a snip from their conclusion:
In our limited testing, there is little else we can say besides the fact that the Hydra software needs more development. Lucid needs to squash the graphical corruption and the crashes, and then they need to work on getting more product-appropriate games supported. More performance is almost a must, but at this point it would be a bigger sign of progress if the glitches went away first.