Lighten up. Going outside is also supposed to be restricted although that's often ignored. in the mean time it's possible to vape invisibly if you choose the time and place and want it to be invisible. i do it occaisionally in all sorts of places and am either not detected or ignored. It's nearly impossible for smokers in my shop to switch to vaping if they can only do it for a few minutes mid morning and at lunch in a day that starts at 6:00am and ends at 6:30 pm, the current hours. There was a steady pace of smokers switching to vaping until management got uptight about vaping. When some occaisional discrete vapes are tolerated there's no temptation to step outside. It is a plus for productivity.Please don't. Just go outside.
I once owned a company with employees. We manufactured. I didn't have any rules, none, zero, nada and never needed any. To employees i said, my job is to look out for your safety,, respect your dignity, and pay you. Your job is to give me my money's worth. I made money and the employees kept coming to work everyday.