Did you ever test this on etc? I am a bit confused as to why this machine would work on etc now as I thought I read that they changed the algorithm slightly to protect from asics and 51% attacks. If they did and this could still mine ect even after the change then it might be viable past September.
ETC has made a small change to the DAG generation algorithm (now called ETChash). PoW is still the same Dagger-Hashimoto. And yes, the miners support Ethash and ETChash.
Here are Linzhi's miners on ETC:
https://etc.crazypool.org/#/account/0x3091385d7AAa9d801c3e4C56A8dF19B3cDB0a35b(Most of the machines we currently have on ETC are in R&D, that's why the overall performance is a bit bumpy.)