Yeah, I chug it, definitely. As we discussed in previous threads, sublingual administration is very much effective, so sipping may, I don't know, but may offer more noticeable immediate effects if you keep the kava in your mouth. The way I do it is just CHUG! 2 - 4 gulps quickly down the hatch... the effects don't quite kick in until my second shell, but they kick in well alright. Helps to have some fresh fruit or a light (very light) snack around, because typically when you chug a few shells back to back, you're sitting there with a belly full of kava waiting to be absorbed.. Mangoes are my favorite to have around. Sometimes the effects come on too quickly though... heh..
I've actually never sipped kava, lol, that sounds awful... the only way I've ever known to do it is by chugging the shells.