Mobility

Attack skills don't cause "pot lag", pots are the ones that cause pot lag. You can pot right away after you use an attack skill, but you can't attack right away after you use a pot. Item pick-up also causes the same "pot lag". This is why you can keep brandishing the same skele for a whole minute while lagging but you can't use your brandish anymore after you use a pot. It's also why it's more efficient to pot/loot in between attack animations while they're still active because the pot lag delay would be gone by the time your attack animation is complete.

That's exactly my point. However, there's particular exceptions, as I and others said, where certain skills do cause it. Not sure on warriors, but there are some.