Negative life recoup bypasses energy shield.

First of all, it does what it says it does, but it looks really weird on a CI build seeing your 1hp slowly drain in the life bar for you to then die with full ES.
It makes sense life recoup doesn't affect energy shield positively but when it comes to the negative value, shouldn't it drain your ES before life or is it intended to kill any CI build who's silly enough to put on a trinket with inverted life recoup?