Years ago I would have liked one but couldn't really afford it. I was loading Blue Dot in 357 and could never get really accurate throws with my Uniflow with that coarse flake powder and always just threw low and trickled up the rest, weighing everything on a balance beam scale. To say the least this was tedious.
When I got a Pact Professional chronograph I decided to see how much consistency I would lose by throwing all charges instead of weighing them. If the consistency loss was acceptable I would start throwing charges instead of weighing every one. I loaded up 25 rounds of thrown and 25 of weighed with everything else being equal and shot both groups over the chrony and checked the ES and SD against each other. Both groups were within 5fps for average velocity but the thrown charges were more consistent. Like half the ES and SD.
I've done the same experiment since then with different powders and different cartridges and the thrown charges have always been more consistent than weighed charges. I gave up on dreams of an electric powder dispenser, kept on using the Uniflow and spend my money on components instead. I did upgrade to the micrometer adjustment screw and it's a real time saver but I see the electric dispenser as a time and money waster.