I'm pretty sure SLI it can be used for any game since you can create your own customized profile for a game they don't already have a pre-defined profile for. You can also make a request for GW2 and they can try to put it in their next driver release(http://www.slizone.com/object/sliapp_request.html)
If you're interested in creating your own profile as opposed to waiting for the request to be filled they have a guide to creating a profile for a new game.(http://www.slizone.com/page/slizone_appprofile.html)
Who knows? Maybe ANET contacted them and they're creating a pre-defined version for GW2
Last edited by Amaurosis; Jul 22, 2010 at 03:13 PM // 15:13..