i currently use the shielding action. i have NO IDEA if it even helps out - but it seems to. all i know is, i usualy have a better chance at getting away from aggro when i'm running and i throw on shield. just use F10 Shift+5 while running - cause u know wat? i have extra Fight sp, it affects no other cooldown, so u can use invuln right after. and even if it doesnt work - its seemd to have a placebo Effect on me. and a placebo effect is good enuf for me!
anyone willing to form a group and try various 'shielding' things out? cause u can't test all its abilites solo.