Smithing, Pick Pocketing, Detect Traps, the list goes on... are all physical skills. Detect Item Status is more a Mental/Spiritual skill, maybe not the best words.
Anyway, my point is, it probably takes some years to learn. Unless magically of course. Can Ruun do this, I really do not know.
Game-breaking if he can, not at all. Edit - Why, because by the time one would get this skill into the highs, the PC is already walking around with gallons of water and libraries of scrolls of identify and has easy access to altars.
Let's see what others think.