Welcome to OC aepfelsauce,
the way I understand it is even on a bike you can run into trouble w/out cpl if OC'ing. And as far as getting your hair cut you pistol would have to remain in plain view to be considered OC, if covered would be concealed. I'm sure others will comment as well, I am fairly new to the OC movement as well, waiting on my CPL right now. Carry On!!