I live in Valparaiso and I've been open carrying since I moved here in 2000. I've only been stopped once by a State Trooper in a White Castle. He asked if I had a permit and I said "yes". He didn't even ask to see it. He then said "why don't you cover that thing up, you're going to scare some old lady". I smiled and said "why don't you cover yours up?" He smiled back and said "it's a little different." I said "I don't see the difference, but I don't have anything to cover it up with nor do I feel inclined to do so unless you're giving me an order." He said he wasn't ordering me and walked off.
I told story to a local Sheriff I know who works at a local gun shop (Blythese Sports) this story and he said Indiana wasn't an open carry state. I argued with him and asked where he got this idea. He said our permits specified "concealed carry". I told him he was mistaken and showed him my permit which says clearly I have a right to carry a handgun and it doesn't specify how.
I spoke with the local Police Chief and he said "I don't care how you carry it, strap it to your forehead for all I care - just have a permit for it".