The name is very important to know WHO IN THE BLUE BLAZES doesn't know at this point in the game every job's 2hr and abilities! Plus, job quest NPCs and ??? locations...
I get that pup 2 hr question all the time. It enhances manuevers and makes it unable to overload while its up, so in other words, nothing. I use it when Im bored cause it'll never save anyone from dying. Kinda nice with the turbo charger (melee speed +) and attuner/target marker (ignore def/ignore eva) but thats about the only time.