You guys are acting like Lann can't get the weakness debuff....
You're argument about that is incredibly stupid.
K well, spear lanns play in close range where they piratically rub their bodies against bosses, usually in spin2win, now their dodge takes 30 stamina, has no invincibility at alll, while with low stamina after spinning. You'll be dead before your respiration rate even gives you the stamina to roll. If you do manage to roll, you'll most likely be clipped by the attack, and be sent to your death.
Now staff evie plays entirely at mid range, and its easier to monitor your stamina with evie's attack and range, and their basic hop takes no stamina, since you're already a good distance away from the enemy, this hop will get you out of harms way. If not, then get in your mana amber and you're safe. (bawww but what if its broken) Flying sparrow backwards.
R9 fury infusion Ftw. That's about one of the only good things about spears.
And it still takes HP.