Gains are about 25% less that what would've been in a long continuous NPP cycle. But, the gains are much, much easier to keep.
The biggest benefits that I have found to this switching back and forth, is that-
1. The bloat from my NPP vanishes about 3 weeks into the EQ cycle.
2. My blood markers, mood and digestion improve significantly when I go onto EQ and before my hematocrit and systemic inflamation takes a hike, I am back to NPP, which reduces systemic inflamation.
I don't think this kind of switching is something unique, for I myself learned it from Matt Porter. I at one point was coached by him. I am sure many pros now a days do that.
Here's a video about him explaining the process-
View: https://youtu.be/Szyw3Tnl-Vg?si=jSrEkYxtD8M65Uh4
Sad thing he passed away few years back.