Yes I have one, it replaced the duties of pistol loading I was doing on my Lee classic cast turret.
When I first ran it I didn't see a massive increase in production speed, more à massive decrease in amount of effort of motion. The pulling of the lever once vs 4 times for a loaded round was the selling point for me.

The dies are proprietary, and the length pistol only. If you are OK with that,
I got mine for a deal with 38/9/45 dies setups, so that is why I went with it.