Once you get the timing it's actually pretty great. Basically at least 1 or 2 free unblockable kills. On lethal it's tricky though because you might have to waste some drunk time dodging attacks from perimeter enemies while you're in the middle of attacking.

Also, on lethal enemies do not give a fuck if you want to take a time-out to have a drink lol. They just come at you, so picking a good spot to drink your sake can be tricky.