Also check out this:
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and this Link Removed
From what I have gathered OH and MI have Reciprocity. They honor the CCW/CPL permits as long as you follow the laws while you are in THEIR state.
When in Michigan I follow MI laws with CC and OC the same as when I am in my home of OH. I travel to MI a lot to see my better half. I am starting to OC and still CC in MI now knowing the laws.
Course I am human and could read things wrong as many others can and have done. I'm sure I'll get myself into trouble as well one day so take it all with a grain of salt.
Carry safe and carry often!