So far, I've done 40g traditional prep shells, about 2-3 times a week. Usually I do them on the kava circles so I can share my experience. I'll only drink one shell of it, though. My noble kavas I'll do 2 or 3 in an evening.
Skin dries out quickly. I noticed it the most on my face.
It has more sedation than the heavy noble kavas I've had (Lapita, Supreme, Stone, Wow, Ambae's Best). I feel it all over my body soon after I drink it, a slight tingling/wavy feeling in the skin of my arms and legs.
Oh yeah, and it puts me to sleep. The folks on the circle have watched me fall asleep in my chair a couple of times.
As for strength, it's not remarkably stronger than the heavy noble kavas I mentioned. Ambae's, Lapita, and Supreme all have me kind of light-headed and acting silly, where this stuff (and Stone and Wow) just backs the throttle right off me. It also bothers my stomach more than noble kava.