Very nice work indeed
Good choise to boot the .img instead of flashing through fastboot (unless that's the only way at the mom.), when all other usb functions are disabled, hence no charging with your kernel
I take it's only working with 1.72 based roms?
I'm coming from a Nokia N900 where some devs actually also did this and they ran into all sorts of issues to make it work and the main thing was to enable it so other usb functions also worked at the same time. I changed device before it came to be a beta I think, but did use it (alpha) and found it very usefull. Could flash kernel(s) OTG through terminal so no need of a pc.
One question though is there a way to do it through CWM with a .zip file, I don't know if the CWM has a function to boot from a .zip? It would be nice to be able to do it without the need of a pc
Galaxy Note 3
What you give is what you receive