Well, if you have 1 BTC now ($2700) and after the fork you have 1 BTC and 1 BCC but 1 BTC = ($2300) and 1 BCC = ($400), you'll really have the same purchasing power.
That is not to dissuade you; this is exactly what I am doing :P Just bear in mind, the market will likely adjust such that the $$ in BTC is just split. What we need is more of that tasty mainstream revenue up in here.