I was annoyed that like in FFXI, the flee effect is removed as soon as you attack or are attacked by an enemy. Which sometimes removed my flee before its full duration due to agro.
But just tonight, I left my shoes on while doing a levequest, and surprisingly found out that after a battle, if you didn't take the shoes off, the flee effect will resume after ~30 seconds of non-combat. The key is to not remove the shoes.
Once in a while you find something in the game that makes a refreshing amount of sense.