For me personally, there is no difference between investing in IEO or investing in ICO because I understand that there is an opportunity to earn and lose, regardless of the process. Therefore, such things.
FYI, I aggre with the people that say "IEO is better than ICO", IEO is more safe because it use an exchange for the escrow of the fund, so IEO teammate doesn't hold the fund directly from investor, it's really reduce the possibility of scamming. ICO is only a less interesting method at this time because of its vulnerability to scam.