All fees paid generated in cryptocurrency on the COSS.IO exchange and through its payment gateway will go into a 50/50 split with holders of the COSS token. The more tokens you hold, the more you will receive. 

Check out this Token Swap video on YouTube: or you can see Rune and Andrei explaining this on a whiteboard: 

Update: 14.10.2017: All non-ERC20 tokens (for now BTC, BCH, WAVES, ARK, LISK, NEM, and LTC) will be converted into ETH before they're sent to the DAO. So you will receive ETH and ERC20 tokens from the DAO.