This is exactly how I've done every insane, amazing, stupid, disgusting, crazy, dangerous, phenomenal thing in my entire life. From eating balut to asking my wife out to maneuvering under fire.
I ate it right out of the shell deep in the Filipino jungle. I knew for years what it was and had preconceived notions. Besides the texture of certain parts I could identify while chewing (e.g. feet, beak), it really just honestly tasted like a kind of hard-boiled egg. If I didn't know what I was eating, I wouldn't have second-guessed it at all. I do recommend it, for the adventure. The Filipino guys that gave it to me said it gives you a big burst of energy, and I thought they were full of it, but indeed, it gave me a kind of heady feeling. I think that just might have been getting a ton of calories all at once?
I absolutely recommend it if you get the chance. The age of the egg is important. A day or 2 either way can make all the difference so make sure you try it with someone who knows who they are doing. The richer hard boiled egg description is pretty spot on.
A richer hard boiled egg with some texture. I liked it a lot. Ate it with a spoon and some sort of sauce. It was definitely different. Would probably do again.