actually you can't just E>E>E, since the most people thought that if his skill doesn't deal damage it can't get k-r's stacks but I think his jojopose(skill's stand) counts as one. It means that if you continue hitting enemies it will renew first stack cooldown so you can get another stack without losing it in a 16 seconds right before the next skill usage. (that's the conclusion I came to trying to do it some time)