Has anyone checked this out?

Well, we know about it, but there haven't been any threads.

I wonder what the max level for those skills are. could be some pretty awesome bonuses at max.

Apparently you can only get the increase of equip slot (pouch) once it reaches max level... which is apparently 30.

EDIT: Scratch that, apparently level 30 isn't max level, but the equip slot is rewarded at that level.