Hi Susannah,
My DH and I did this 12 months ago and found it really easy to follow. We allowed one night off per week to have whatever we wanted and I had mainly eggs or tuna for lunch as I just pysically couldn't eat all of the meat, it was too much. The main meal recipes in the book are really yummy but there is a bit of prep time for some of them.
We were on it for 10 weeks, I lost 7 kgs and DH lost 11kgs. I have to admit, we did very little excercise though so that would have helped some more.
I'm with you though, I need to eat actual food. I wouldn't cope on a meal replacement program!