Just ordered one of these yesterday, should be turning up today. Can't wait to mess about with it. Has anyone had any issues running SLI and g-sync together as i heard it might not work well together, looking juddery, when i read something on the geforce forums. Hopefully it will be fine.
Nice and I run Tri-SLI with zero issues found so far.
Also, my 3D emitter arrived this morning and just tried it on Tomb Raider 2013 and seriously stunning. 3D never looked anywhere near this good on my Asus VG278H. Be warned though, you need some serious grunt to run it and you can't run G-Sync in 3D but that is something minor (although this could be fixed in a future driver update I guess).
For G-Sync, I have found 2 games that don't seem to play nice (or as well as others) and they are:
Bioshock Infinite - Runs ok but when loading new areas, it seems to have a fair bit of stutter. Once loaded it is fine but a minor gripe there.
Sniper Elite V2 - Nothing really wrong here but when you move slowly along, I notice a slight judder. I get the same when G-Sync is off, so could be a game fault.
Everything else I have played and tried just works like it says on the box. BF4 was incredibly smooth and it felt like a brand new game. Grid Autosport was a true showcase and flowed flawlessly. Tomb Raider/Batman AO/Alan Wake/Borderlands 2/Hitman Absolution/Metro Last Light/Murdered Soul Suspect/Sleeping Dogs/Thief/The Witcher 2 are the games I have given some play time too and I honestly have never seen gaming like it. I am very picky when tearing or stutter happens and it is strange how we accept it as "the norm" and just get on with it but since getting the Swift, gaming becomes something we should have and no tearing, no stutter and smooth flowing gameplay. I found that so long as frames were above 30, G-Sync brings an incredible experience to our previous gaming experience.
The response time of the monitor is something that should be mentioned if you are a twitch gamer and like the game to move/shoot exactly when you press the button/key, this will be for you. I am a BF4 fan for my sins and too often have I clicked the mouse button to shoot and hit the floor dead before that mouse press was recognised. Now when I hit the floor dead, it was because I was too slow and not input lag.
Colour is very good but you do need to keep your head pretty still. Not sure what they call it when you move your head and the colours shift but you do get that with this monitor slightly. Not anything I worry about and generally when I am gaming, I sit still anyway. Out of the box colour is bright and the colours do look a little washed out but with some tweaking, you can get them deep and vivid. I don't have any callobration tools but I do have pretty good eyesight and a bit of patience to set it to how I like it.
As for the cost of £669.95, is it worth it? Oh yes. It has brought my gaming to a whole new level and really enjoying it.
The ideal GPUs for this would be a pair of GTX 970s or anything similar from nVidia and you will be set for quite sometime
Hopefully they update the drivers to fix this. Pretty poor really that Asus never tested it on AMD cards, even though they clearly state it works with them, just without G-Sync. At least they have informed AMD about it now (from ROG forums.)
. Well at the moment i'm running the monitor at 85hz and no blacking out, unfortunately it still does it on 100hz. 
It's fantastic for BF4 as you have mentioned. My game has definitely improved since buying it. SPM hovers between 500-600 now instead of 400-500.
