Been skipping breakfast for about 5-6 years now, and it's had a really positive effect on energy and weight, plus helps me keep IBS in check, especially when combined with minimal sugar intake.
But the by far best thing is to REALLY enjoy a nice lunch when you've been actually hungry before. Turns out I had completely forgotten what hunger feels like before doing IF, and it's actually a pleasurable feeling when you know you're about to break your fast with a great meal.
Before IF, I would often have lunch "because it is lunch time" and didn't particularly enjoy the food. Very different when you haven't eaten for 16 hours.