With an IEO you would like to think the exchange does some half decent diligence, which should mean they are less likely to be a scam compared to ICO's. Also as the exchange has their name loosely linked with the IEO, you would like to think they would choose projects with at least a reasonable business plan.

Basically IEO's are like ICO's but on average, should be safer.

Personally I'm not touching anything unless it blows my mind, which is highly unlikely.