If you could post a patch that would be beneficial. One thing I can suggest is the Quat library from Graham Wakefield (also included with the Cosm objects installer). You can transform [axis2quat] then [quat2euler] to give you xyz, then I think you can go [euler2quat] and [quat2axis]. If I'm not mistaken though, you can also transform jit.ogre using jit.gl.handle which will accept rotatexyz.
I've been hoping Rob will be able to provide a solution to allow the rr.gl.ogre object to integrate more efficiently with jit.artkmulti. Or perhaps someone else will come up with a good workaround.