The state just issued an new memorandum concerning open carry.
Hopefully this clarifies the issue if open carry is legal (with a permit), and if you need to show your permit to the police if asked.
Here is the first page and a half, out of six pages:
Now please go and read the whole thing. It covers how they may “request” your permit, and how they might then use things against you.
You may read the full memorandum and download a copy here: