Well Hells Fuckin Yeah!
Went to 4 LHS before finding EXACTLY what I was looking for. I found a version of the SCS that falls somewhere between what I originally bought a few years ago and what they offer today.
The teeth shape and teeth pattern are notably different, with smaller teeth in the inner circle of the 2.1" grinder. The pass through holes are a slightly different shape as well but not very different.
The real special part for me is that after casually looking at 5-6 grinders, I wound up with the only 4 piece grinder in the case that still had an old FINE screen.... SCORE! Totally worth the premium to buy in person and with confidence knowing I got the screen I wanted- though I could have saved probably about $15-20 buying online.
The last changes I noted were they have also updated the 4th pollen chamber to concave like the bottom of the 3 piece grinders. No more 90* corners for pollen to get trapped... though it does make using the included pollen scraper a bit challenging without having a flat surface to work against.
...I had been trying but could not hold this purchase till 4/20. Will report more on grind consistency later, but everything should be awesome- spins just as smooth as a SCS should
Super fluffy (as anticipated), slightly coarser grind, but not significantly and it may be strain dependent... need more testing.