I agree its so unclear. Up until a few weeks ago I understood that the token would not be worth anything in the new EOS world, but I now believe it will. I currently understand that the EC20 token available today, will be converted to a new token on the EOS block chain 48 hours after the presale ends. Therefore, you need to map your ethereum address (that holds the EOS tokens) to an EOS address to make sure you receive your new tokens. There is some info on this here:

http://support.exodus.io/article/65-i-ve-received-eos-tokens-in-exodus-how-do-i-register-them