Here is a statement from a test I read about on the Internet:

The averaged results of four tests at about 70°F showed that the E10 lost more total weight to evaporation than the base fuel, but less gasoline.

This was a test using open glass containers sitting in a room. Maybe the increased weeping is more towards alcohol evaporation.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."