Aligns reasonably well with my (short) experience. I got a bag from a friend and ate a jar of Soylent every morning for breakfast for about a week. It was in fact pretty great: I'd pour out N calories, where N was how much I figured I'd need to eat to get to $nextmeal, and then I'd drink it and be on my way. The stuff has really nice properties as far as hunger goes, too; it has neither the lead-brick problem that I get from things like chicken and dumplings nor the gone-in-fifteen-minutes problem that I have with fried rice. I generally ate as much as I wanted and felt perfectly full until right when I'd expected to be having lunch or dinner.

To answer the people who think it can't possibly be healthy, honestly, I don't have time to fix most of my diet. I can put in all the time I want to make sure my dinners are perfect, and I generally do, but I'm too rushed in the morning to have anything other than cereal. And I have to have lunch out so that's impossible to get right. Even if Soylent doesn't have "the proper carb-fat ratio" or something, it's better than what I have right now.

So, summary, I have some on order and the rest of you can say "I told you so" if I get cancer in thirty years. Given what some other people survive on I doubt you'll get the opportunity.