I've tried it on my T999 and it works flawlessly!
Panorama, Video recorder and Picture snapper works fine without any issue.....
My current ROM is Mokee ROM- KitKat 4.4.2 (MK44.2-d2lte-201405100124-NIGHTLY), since Mokee is based on AOSP and CM, it is safe to say that it works on AOSP and CM Roms well but I'm not quiet sure about Touchwiz Roms (maybe someone can try and let us know how it goes on Touchwiz Roms)
I found it in 2 threads:
a thread in the App section of Galaxy S GT I9000 Forum
Original Post- in App section of Nexus 5 Forum
It also works well on those 2 devices!
Apk attached for quick download.
Updated 23/05/2014: added
Great Freedom CM11s Theme
All works well on KitKat AOSP and CM11 ROMs no problem.