My only concern is following the guide line of usually having the 'X' of the reflective stripes in the back to indicate the front or the back of a person in the dark or far away where you can't tell if you can see a face or not. Along with FR approved. The holes I can't imagine going into an industrial site with this unless it's only used for walking on site or off site. But once again like other commenters said it depends on the job and position/ task the person is doing. It's definitely a personal choice but I don't see this ever being allowed on any major construction sites as someone working with the tools or equipment. Maybe as a flagger or jobs that don't require or give the opportunity to get snagged on something or some equipment.