ok here is the bitbucket for my TextrePacker exporter
just copy the orx folder in your exporter folder.
in creates only POT textures.
if you want to customize the Graphics settings, do it in a other file by overloading the sections with your parameters, so if you regenerate the .ini, customs settings won't be overwitten.
feedback is welcomed.
repo is now public
I'll give it a try next week end and ask Andreas if he'll consider integrating it with Texture Packer.