I'm not really noticing it though. I'm mean I notice a slightly increase in strafe speed but nothing else that is actually worth mentioning. As for the jump it only affect the first jump you do meaning it has no effect on jumps that double/triple jump do.
It really rather subtle. It would affect your ability to get out of sticky situations in a pinch. I've done better in jumping puzzles in the raid using higher agility. It's all about what you like.