"However it is still going to impact our markets and throw things for the loop over the next few days." > I'd wager at least a few weeks..

Also, despite Bitcoin Cash's ultimate fate, I read a post saying it will be around for a long time since there will be a good amount of people with BTC that will just hold on to it for a while (since all of us BTC holders have it now by default).

One last thing - If it does replace the current BTC, which is definitely possible, I think the transition would take a looong time since Bitcoin (classic) is so popular.