No, IEO not good for bounties because IEO is promoting projects through exchange. So there is no similarity to the bounty hunter with it. However, if any projects manage bounty in IEO mode then it is good for bounty hunter. It is a very effective bounty promotion to convey all the developmental aspects to knows everyone.
There's already bunches of IEO bounty projects in bounty section. One of those was harmony which probably being ended soon. There are some more, you have to check the board.