If there were a sustained hard fork, we would support both coins. I think this is extremely unlikely to happen, however, as it would require > 75% of the miners to agree to it. The other 25% mining the old chain would be in a very weak state and would quickly switch rather than risk being attacked by the other guys.
I don't know ... After some consideration I am more sympathetic to Guy Corem's position that competing coins post fork would be great . I would likely buy many GPU's and BTC Core coins as well with an ASICproof algo behind the coin.
http://pastebin.com/B8YQr5TQBoth coins will surely take a large beating initially, but one would become more decentralized and one more corporate over time. In a way I am somewhat disappointed that the Chinese miners appear to be getting behind core. I may have to switch sides temporarily and support classic to insure this split happens for the good of the ecosystem.