Indiana law does not prohibit nor endorse open carry. I've always found that a little odd.
As a average citizen with a CCP, I see no reason to attract undue attention by strapping on a sidearm in full view of the public at large.
One thing is for sure; if you open carry in Indiana, you WILL be stopped, you WILL be questioned and you WILL be on their (LE) radar.
Although I seriously doubt carrying in plain view will bring the wrath of Gov't entities down upon me, I will not open carry...I just don't need the aggravation nor will I invite it.