Yeah I started doing it after reading about the health benefits, both to humans and yeast. I don't think I've ever tried a ferment with JUST pollen, I always use at least 2 extra hive ingredients (like propolis or royal jelly), but I have awesome, healthy fermentations that don't stall out or require staggered additions. It makes sense when you think about it... honey is extracted from all the other hive products and is thus lacking in those nutrients those products provide, requiring people to add nutrients. Why not just use the natural ones?