Modern polymer textiles are a beast. One time, my fencing coach had to replace the clip for the electric connector at the back of his jacket which had worn out

Modern polymer textiles are a beast. One time, my fencing coach had to replace the clip for the electric connector at the back of his jacket which had worn out and broken off. The tailor couldn't puncture it to sew in a new clip, and had to get some specialized equipment to perform the repaier. Accidents can still happen, though, especially if a broken weapon slides into the sleeve. But still way safer than in the past.