Not sure how many people use both but I wrote up a short tutorial on how to use Renoise as a sequencer for Supercollider. I use Reaktor as a plugin in Renoise to send the OSC messages. Let me know if you find it useful or have any questions or corrections.
http://schemawound.com/post/98237134908/renoise-to-supercollider-via-reaktor-and-osc
thanks,
Jonathan