SLI is not yet supported, or so the benchmark page says.
I imagine that, just like they're working with Sony on get the PS3 version ironed out, they've got a small team from nVidia and from AMD getting paid an outrageous consulting fee to work with them on making XIV look its best on those cards, too. SLI and Crossfire support will eventually be part of that.
____________________________FFXI: Catwho on Bismarck. Once again a top bard on the server: Dardaubla 90 on 1/6/2014
FFXIV: Katarh Mest on Lamia - Member of The Swarm and leader of Grammarian Tea House chat LS Curator of the XIV Wallpapers Tumblr
I can't understand anyone who skips the cutscenes of a Final Fantasy game. That's like going to Texas and not getting barbecue.