Right now, the only penalty for fleeing seems to be possibly taking an Attack of Opportunity. Now if you want to flee, you're likely injured and that MIGHT kill you... So for that small condition set, Escapist might seem worthwhile.

However, there are two other, better Talents you could take instead: Duck Duck Goose, which prevents you from triggering AoO, and Comeback Kid, which will revive you if you die from an AoO.

Hence, Escapist is pretty much useless. Just remove Duck Duck Goose and add in the prevent-triggering-AoO to Escapist on top of "flee battle anytime".