I started my police career using dump pouches. I purchased HKS speedloaders when I first saw them. They worked OK. I took an officer survival class which introduced the Safariland comp loaders to me. I have used Safariland ever since.
I used an early model of the speedloader in a 1974 gunfight w/armed robbery suspects and it got me back in the fight in an instant. Another cop was shot trying to reload from his dump pouch. Speedloaders were not issued equipment until later, I’d purchased these on my own.