Not on this Galaxy S3, unfortunately. But I know the Nexus S <http://en.wikipedia.org/wiki/Nexus_S> uses Power+VolDown, as I've used that before (In my prev post I meant "Nexus S", not "Galaxy Nexus", sorry. I haven't used the Galaxy Nexus). And just do a web search for taking screenshots on android, when Andoid added built-in support for it in 4.0, the standard straight-from Google AOSP combination was Power+VolDown. I guess Samsung has always been modifying that.
Android 4.3 isn't really the reason I'm waiting for CM 10.2. It's more because I'd tried CM 10.1.3 already but ran into the (mostly camera) problems you get from using the newer version of the S3's bootloader on that. Ie, the same issues as here <http://rootzwiki.com/topic/100194-cant-connect-to-the-camera-again/#entry1427298>. I could have tried switching to the older bootloader, but by the time I'd gotten that far I'd already wasted most of the day, so I'm done with it for now

I did try a nightly of 10.2, and the camera worked, but Dialer crashed, so yea, I'm just gonna wait for the stable
Interesting. CM is the only modded ROM I'm familiar with, so I've never heard of those, but I may look into them.
Verizon :/
So there isn't any known hack or hidden setting to change the screenshot combination?