Just ate 1/4 of it (it's way too massive to even think about fitting the whole thing in my mouth, and half would still be too big) and was very impressed with the flavor. It's very subtle, not bitter at all, and just generally very pleasant. Not like the "meat" flavor described for the red goronong at all.
The spiciness is quite another matter. The hottest thing I've ever eaten is a few red fataliis, which I've read get to 500k shu. Those absolutely blew the many scotch bonnets I've eaten out of the water, and I always thought that the red fatalii seemed at least three or four times as hot. This topped even the red fatalii by quite a bit. I would guess that this one's shu was around 650k - 800k shu having eaten a sizable amount of it.
Having said how bad the burn was, it actually comes about in much the way that a habanero does. When you first pop it into your mouth, it isn't hot at all. It's literally like eating a differently flavored tomato. One minute in and the burn still is nothing to sweat too much about, but this pepper has something else in store for you. A few minutes after that and if you are not experienced with eating superhots on a regular basis (like me) you are sitting down, clenching your fists, and trying not to scream.