Overall, thanks. Game works with SLI on.
2 issues to report,
1. Game resolution must match desktop resolution.
2. Load allocation is uneven, gpu1 loads to 99% before gpu2 kicks in. I'm not sure if this is how SLI is suposed to allocate resources? But see my image below
http://s9.postimage.org/z1ssryg
0t/clod_SLI.jpg
3. Vsync does not appear to work. I'm getting massive frame tearing. (2 x 570 GPUs)