I have been toying with it lately. It seems like a good way to single dose but the wdt steps in the prep still don't make it perfect.i would love a grinder that I can grind right into the basket, level, tamp and pull with a single dosing mode.
I have been grinding into the tumbler, stick a whisk in there and circle it 2-3 times, put it over the pf, remove the doohickey, shake, tamp. It's not a big deal.
This morning, just for laughs, ground directly into the pf, shook to level, tamped, and had a decent shot -- two months ago, that would've squirted me in the eye and stained my shirt from the spritzing, so it took some use before I could do it, 5-10 pounds or so.
The TiN coated burrs are quite easy to turn. However, it takes more than a few turns to get through 16-18g (60-80 revs or so). The first couple weeks it was well over 100. Got old real quick. Thank goodness for electricity.
Sssshhhhh... don't let the Grindmonster know I have one, it might eat me.