I am a firearms and tactics instructor and live in WV where it is legal to carry concealed. I carry a primary pistol and a backup every day even in the 'clean world' where I live.
I have worked some training contracts where firearms were not allowed on the corporation's premises and on some federal installations and military bases where the same applies. I didn't carry when on premises.
I carry where it is legal and administratively permitted. One does not make an appointment to be assaulted....these things just happen out of the blue.