So far, I have seen several projects that claim to pay with ETH, and the results are all scam projects, which is really disappointing. The IEO project was very popular in the beginning, and slowly investors lost confidence in this approach.
Get used to it, since the market conditions are so difficult for icos I would have thought that scammers would have given up already but it seems they are trying to find all possible ways to try to scam bounty hunters and it seems they are now offering to pay their bounty hunters with ETH but unless they sign an address with enough funds to pay everyone then you should not participate since the chances you lose your time are going to be very high.