Okay I just tried it out and didn't work. I extracted the creature models, used CatatoLKM2 converter, changed the extensions back, packed it in a patch with a folder named creature and folders in there with the model stuff. The DBC's from the repack I downloaded are editable so that's no problem, and those DBC's have the data for pretty much all the creature models (since all the models work if I use the encrypted patch).
All the releases/tutorials of AnthonysToolbox are gone and that's pretty much the only tutorial I keep finding so I'm probably missing a few steps?