Hello! Xan here. I'm unsure if this is the correct forum to announce the creation of a tool. Some of you may better know me as being the original guy to convert SK models. (Meaning I was first to get an OBJ and have people know about it)
I'd like to announce that Spiral Knights Model to OBJ is now complete! You can watch this mildly funny video I made demoing that it is really for real.
You can get this tool here. It runs similarly to Spiral Spy, however does not have a model preview and is much more simple (Click a button to select your model, click a button to export it) - https://github.com/XanthicDragon/Spiral-Knights-Model-to-OBJ/releases
Note: You will have to manually rig the model, which is not hard to do at all. In fact you may be better off selecting UV regions and making each region its own model for bones.
Let's see some animations on YouTube! Be sure to mention my tool if you make an animation with it! ;)