I've been doing DIY soylent for a few months now. I have to say it really does liberate much of the day, and it isn't at all a chore. It's easy to drink, I just sip it throughout the day. It has only a vague taste, and is a bit like drinking thick water. It might sound like it would be unpleasant or boring, but it isn't. I still have normal meals in the evening, but more and more I've come to feel like going all-soylent.
I suggest starting with the hacker school soylent recipe [1], but eliminate the flax seed in favour of using xanthan gum and inulin as fibre sources, and make sure you blend the lecithin granules into a fine powder before making up the mix. That gives a smooth, pleasant texture and makes it very easy to drink. I'll post the full recipe on http://www.makesoylent.com/ this evening.
Yeah flax seed is a nice omega3 source as well as a fibre source. But it tastes disgustingly bitter, and even the mostly finely powdered forms are like sand in your mouth. So for textural and taste reasons, I switched to alternatives.
