I actually O/C quite a lot... more than I conceal to be honest (with exception to when I'm driving in the cage of course, which is legally considered concealed carry). I have yet to have a bad experience where I had to assert my knowledge of MI carry law *boy, I hope I didn't just jinx myself LOL!* Places where I O/C regularly that it's been noticed and well received are:
**BP Station in Livonia on the corner of 5 Mile Rd and Levan - Singh is there in the morning, when he first noticed my 92FS he was curious as to 'why do you have that?' (referring to my sidearm). I simply told him, "It's a crazy world, my friend, I'm sure you know this. The more good, responsibly armed, people there are walking around, the less chance there is of a criminal getting away with whatever it is they may have planned." He nodded, smiled, and thanked me.
**Chase Bank in Westland on 7550 N. Wayne Rd - I always used to lock my unloaded sidearm in the trunk lock-box before going inside, empty holster, to deposit my paycheck (despite having a CPL and being aware of the interpretation of PFZ's and how they impact O/C for CPL holders). A friend of mine also has a CPL and informed me that he O/C's in his Chase branch all the time, apparently Chase acknowledges and respects MI carry laws. So, I went on a limb and O/C'd today during my usual weekly transaction... they were as friendly as always, made some light small talk, and wished me a good weekend.
**Nisreen Smoke Shop in Westland on 240 N. Wayne Road (AKA City Smoker) - The fact that I've been a regular patron here before I even started carrying may have something to do with it, could also be that I've seen others O/C there. Regardless, I've never had a problem carrying in this store. Joe and his staff have always been great!
I DO NOT recommend O/C in any MJR cinema! I will not confirm or deny doing it myself
however I do know, via an e-mail response to an inquiry I made, that "It is our policy at MJR Digital Cinemas not to allow firearms into our buildings." ~shrugs~