The roulette itself gives you Law & Poetics if you are on a level capped (60) class. It gives you different rewards if you are on a leveling (1-59) class.
So, yes, people do run this (and other roulettes effected by this pattern) on their level capped characters for the tomes. Been running into them like crazy. Got the Library today for my leveling roulette with 3 other level 60's at i200+. That poor dungeon didn't even know what hit it.
