Demon Stitcher unique glove do not function when the Eternal Life Lich node is taken

Demon Sticher unique gloves read: Sacrifice 5-15% of life to gain that much energy shield when you cast a spell
Eternal Life node reads: Your life cannot change while you have energy shield

It makes sense that demon stitcher's sacrifice won't change your health when you have Eternal life but the wording is not clear if it means you gain 5-15% of your max life as energy shield or if you gain the amount of life you sacrificed as energy shield.