IEO is the right decision and the exchange is quite popular. I'll buy some tokens for me to just sell more in the future)
I like the projects that conduct IEO. It gives more guarantees for investors. Usually exchanges check the projects.
In 2017 it was a lot of scams ICO when collected money ICO disappeared. Investors stop to trust ICO. Exchanges check IEO.
IEO gives more quarantees to investors. But a lot of depends from exchange. It must have a liquidity and a lot of traders.