We are looking at adding Holganix to our line. I would be careful with any Nitrogen inhibitor. I am not familiar with Stay-N but I know you can't use UMAXX or UFLEXX with Holganix. They contain a bacterial inhibitor. Holganix is full of bacteria. You don't want to stop them.
It looks like to us we can reduce our chemical inputs and get quality lawns for the same cost as conventional methods. We haven't seen a true organic program that works in our area yet. We hope this can build into that eventually.