Ehh, there are four robe slots in KotOR 2. The Jedi Robe, the Master Robe, the Jal Shey robe, and the unused Revan robe (I, N, M, and J class robes respectively). You would have to edit the UTI files of the robes and also the texture, model, and icon files to fit in the slot of your choice (meaning you can have four robe models installed at a time). So, it's doable, but its kind of complicated.
If you're interested in doing this, I can help you.
Last edited by 90SK; 10-29-2012 at 12:16 AM.