Early on in NSD, when I got frustrated with finding a pain free baseline diet, I tried water fasting. I made it 24 hours and hated every minute of it! I tried it again after getting some good advice from another poster. I found it easier when I slowly worked up to it by gradually lengthening gap between meals and eating less before going full fast. But I still hated it.
I have read many positive things about short-term fasting - Dr. Valter Longo of USC has done some really interesting research on the impact of fasting/calorie restriction on longevity, the immune system, and cancer.
I have also read that long daily fasts like what you're proposing are more beneficial for men than for women (e.g., markers like blood sugar, cortisol, exercise, etc.). And from what I can gather from various paleo forums, this kind of fasting seems easier to maintain for men than for women.
I can see the appeal of it if you're struggling to be strict with the NSD. I hope it works for you. Good luck!
Suspected SpA. HLA B27, xray, u/sound, blood tests all -ve. Ancient history of plantar fasciitis, SI joint pain, knee arthritis. Recent history of tendinitis, neck pain, debilitating finger pain and stiffness (especially mornings). No diagnosis, no meds.
Jan 2017 - discovered NSD - 97% improvement in symptoms, continually amazed by my results, wish I'd found kickAS sooner
2014 - stopped eating all grains
2012 - stopped eating wheat
2010 - stopped eating dairy