I use it all the time if my weight starts to climb and in general I eat like this (more or less strict depending). It's about to get warm so I'm stricter than December. I think the plan actually has a lot of flexibility based on what you enjoy eating and what your goals are. It's easiest for me to think in terms of serving sizes of non-leafy green starches sense that's what I'm most familiar with. I still eat pasta and bread, but I keep it to half a cup on a super low day or 1 serving. So for me it's just an easy way to control portions.
If you want to go from 12- 6% bodyfat that is a different story and requires you to be much more strict in how you define no, low, and high carb days. Either way I've found it's a good "middle of the road" approach vs. Strict low carbing that is difficult to maintain. Plus it really forces you to fill up on leafy greens. That's a good thing (unless you are on blood thinners).
See this is me I'm trying to lean out. So I'll be on the stricter program taking in a lot more protein. I've also increased my cardio and resistance workouts.
I like your approach it is flexible. Plus I found out about a year ago I love fresh spinach. If I have a meat sandwich fresh spinach is now my choice over lettuce. So filling up on leafy veggies won't be difficult at all. Thanks.