I have.
Short story is I was injured at work a few years ago, and struggled walking more than 5 minutes and do basic things like shopping. I tried to rehab with weights, but this kept making things worse. Muscles atrophy fast when you're home bound.
The physio gave me the idea to go for some kind of functional exercises instead of weights as I was used to. The book had just what I needed: a series of body-weight exercises with progressions from easy to hard. All the rest of the prison hyperbole I ignored. I did have to do rows with exercise bands to get my back and shoulders working properly again before I could do any of the horizontal pull-ups, as the door pulls in the first progression are fairly useless.
Results:
I'm in significantly less pain, and I'm quite good shape despite some lingering issues. I put on about 10kg of muscle and lost some fat over the first ten months, and have stayed at that point since. I get stronger in leaps and bounds, rather than slow progressions.
My physique is different than when I used to do weights when I was younger: less bloated and boxy, more V shaped and trimmed, and definitely better core and shoulders. My knee is still messed up, so my quads and calves are lagging. It's hard to get fat while doing CC.
I feel stronger at general tasks than when I did weights. I've tried the old weights I used to do, and they are beyond me now - but I still feel stronger in general than I used to be. Bodyweight work feels more taxing to the CNS than weights, although I preferred compound movements when I did weights too.
The core of my exercise program are those from the book, plus add some other bodyweight and elastic band exercises. Success is meeting your own goals.