Though there is still a possibility that IEOs will end up something as a scam or a bad project, I think most of them are performing better than ICOs and are more worth looking than ICOs. But it's not that I am trying to convince people that get in to IEOs because there are still good ICOs out there.
Anything do have the possibility and when it comes to investment there's no assurance that you wont really experience such loss.
The difference here between IEO is that it is already traded up on exchange once it launched.You cant differentiate if the project do really
have the potential or just die after such launch.
The results after being listed will the defining factors whether the project is good and can compete with the market or it will just die naturally same with those projects that came from ico's in which didn't take long before being forgotten around this industry, performances will still be the advantage of any projects that wanted to stay and succeed more.