That's not exactly what Freicoin intends to do. Their goal is for Bitcoin to remain the long-term store of value, while Freicoin becomes the high-velocity everyday currency. Even poor people could exchange effortlessly back and forth because they're both cryptocurrencies.
No poor people cannot effectively change small amounts between crypto currencies because even with crypto currencies minimum fees and limits can cripple them. I actually ran into the following situation yesterday. I received 10 NMC from a mining pool and decided to sell them on BTC-E for BTC to produce a grand total of 0.042 BTC. When it came to withdraw the BTC I find that there is a minimum of 0.1 BTC for a withdrawal amount and a fee of 0.01 BTC. This is not intended as a criticism of BTC-E in any way as there are many valid reasons an exchange to do this but rather to illustrate how even a very small minimum and fee can hurt the very poor. To put this into perspective the daily GDP per capita in Somalia or Burundi works out to 0.0457 BTC (based on an annual 200USD per capita GDP and a BTC/USD rate of 12). This means that a significant proportion of the population in Somalia or Burundi earn way less.
"Why would I ever use Freicoin, then?" everyone asks. The theory is that loans would be easier to get in Freicoin because of its interest rate. I'm personally not 100% convinced that these loans are desirable, so the Freicoin forum would probably be more inclined than I to debate its economics. I say we just do an experiment.
So if one believes that demurrage is a good idea, they can put their money where their mouth is. Freicoin will either confirm or disprove the merits of demurrage, and IMHO that's better than arguing until we're blue in the face.
The issue here is one of perception (image) vs reality (substance). The perception is that a demurrage currency (Freicoin) favors the poor over the rich while a deflationary currency (Bitcoin) favors the rich over the poor. After all the rich have more money than the poor. The reality is the exact opposite. Bitcoin actually favors the poor while Freicoin favors the rich. Unfortunately we live in an age where image more often than not trumps substance so it is not surprising at all that the Occupy Movement would come up with Freicoin and be skeptical towards Bitcoin.