in my opinion, maybe a little guarantee and protect bountyhunter. because if a project uses IEO services, more investors will guarantee the sustainability of the project. so dev can pay for bountyhunter. importantly, project coins will definitely be listing in the near future. Unlike ICO, listing planning is still unclear.
IEO is just one step closer for the success of bounty hunter to be paid but for me it is just like an ICO it is also depends on the team if they will going to pay you back for the effort that participants made.
Yes, you are right everything is based on the team whether it is an IEO or ICO, we are not asking more than that if they wish to pay they will pay according to the promise made by them. When compared to ICO, IEO is much better because most of the exchanges will do some research before listing the coin.