Well, I believe the way a portfolio should be structured should be 3 tiered. On the short term, you will still have to make fiat money to pay your daily expenses. Investing in p2p lending seems to be a good way to get around inflation based economics since the banks are not going to pay you sufficiently a high interest rate for keeping your money with them. Medium term strategies should still be the stock market since all the money is still eventually going to end up with large MNC providing real goods and services. I would say crypto-currency will still require a couple of years for real mainstream adoption.
Anyhow, I still see cryptocurrencies as a more efficient monetary vehicle compared to fiat.