I was under the impression that you needed a USB Gecko for Gecko OS to run/work/do anything, but upon reading the documentation for the new version of Gecko OS apparently this is not so.
Exactly what can you do with Gecko OS without the benefit of a USB Gecko (which I am sooooo getting sometime)?
You only need the USBGecko for the more advanced stuff like WiiRD (real time cheat engine, ocarina's predecessor) and communicating with your PC for different reasons.
Meaning you get:
A cheat engine for Wii games
Region Free gaming
The ability to copy any save files
Some other stuff