This reminds of 29 years ago, the attire for the spark on a construction
site was simply a pair of jeans or a boiler suit. Having to stuff tools in pockets ,but we just got on with it. Then one day a fella turned up wearing a leather tool belt and God did we take the proverbial. We nicknamed him Hollywood because he thought he was a "Star", but if we saw what we are wearing nowadays. Who would have the last laugh. Personally I have used in the past and certainly came in handy, so I believe they still can useful.