Yeah, it's definitely an inventory thing. I think it's a good idea personally and encourages people to play lots of jobs. Example being that when you decide to level a new job from 0-99 in a week, at least you have 5 solid peices of armor waiting at 99. I know some people think it's fun to go get all the new armor for a job, but there are times nowadays where someone is forced to level a job just for an event that their LS starts doing (such as SMN and SCH pre-nerf and maybe now) and it's nice that there's not a huge amount of work to be done if you already had a BLM or WHM geared.