In this part of this Wikipedia article, it states
In other areas such as Hyogo and Mie, いる /iru/ is hardly used and おる /oru/ does not have the negative usage.
What I want to know is, does this statement mean that おる is used in nearly all of the instances いる would be used in Standard Japanese? Does おる also replace the duties of ある? How does おる work in Hyogo and Mie?