I'm using a mix of LOR and Lynx equipment. I sequence in LOR S2, but I use xLights to schedule/run my show without an iDMX. All you would need with your current setup is a Lynx dongle. With xLights, you could run 2 lighting networks, one off the LOR dongle and one off the Lynx dongle. However, what I've done (and I think is easier), is to have a single DMX network connected to the Lynx dongle and run your LOR boards in DMX mode (they will do this automatically with anything but the oldest firmware). LOR uses pins 4 & 5 on the CAT5 cable and Lynx uses pins 1 & 2. So as mentioned above, refer to the Wiki for instructions on constructing a cable to swap the lines around.
xLights will play LOR and Vixen sequences over any combination of LOR, DMX, and Renard networks.
Matt