I was a firefighter-paramedic for 14 years before I left in 2020. You are spot on about the 150 years of tradition. But I don't think euro style helmets will

I was a firefighter-paramedic for 14 years before I left in 2020. You are spot on about the 150 years of tradition. But I don't think euro style helmets will ever catch on in the U.S. The department I worked for did not care what helmet a person used as long as it was NFPA approved for firefighting. We had one Lieutenant with 20+ years of service who switched to the Euro style and he absolutely loved it. Said it was the most comfortable helmet he ever wore. I can tell you a traditional American style helmet is very uncomfortable and when I was in full bunker gear with an air pack on, the back of my helmet always hit my air tank not allowing me to look up very well. During training when we would have to repel we had a safety belay attached to the back of the class 3 harness. As soon as you went over the side the belay rope would push the back of the helmet up causing the head to push forward (chin to chest). Just completely uncomfortable and awkward. You had to spend a few seconds to get adjusted so you could focus on the actual training and getting yourself unfucked from the belay rope that wouldn't be there in an actual situation.