A few years ago, I had the urge to go through all the keys. Every morning, I did a different one (the 1st one the 1st morning, then the 2nd the next, and so on). After I completed this, I repeated it all. It felt good doing them.
That is literally all I can write on the keys, as I am not experienced with them otherwise. Some praise Satan, some curse the enemy, from what I've read somewhere on the JoS. I don't know any other Zevism who have gone through them like I have so I can't speak of anyone else's experience either.