Loadiine GX2 can now be used with TCPGecko. (you need latest compiled release, not the official v0.2)
There's currently no individual setting or graphical interface to set this option directly inside loadiine settings menu.
To enable TCPGecko, you need to edit the loadiine_gx2.cfg file manually in your favorite text editor, and set:
LaunchPyGecko = 1
All games will have PyGecko/TCPGecko enabled at launch.
Some games might require you to also enable TCP server logging (for example: Zelda Twilight Princess).
You can now first launch your game and then launch your preferred Gecko program on your computer to play with the game's memory in real time.