@G_Chem
Maybe you posted it already and I missed it, but did you finish your full reagent testing?
I just re-tested 2 batches this morning with Marquis, Mecke, Mandelin and Simons A/B.
Batch 1:
Confirmed meh (for me and my wife anyway, have some friends who said they enjoyed it)
DN sourced from Canada
White powder with small white/grey crystals
Batch 2:
Haven't tried yet
DN sourced from USA (same vendor indigoaura got her last batch from that she said was just ok)
White powder that looks like sugar
Reagent Results
Batch 1 (Meh)
Marquis: Straight to black
Mandelin: Straight to black
Mecke: Straight to black
Simons A: No reaction
Simons B: Bright blue
Batch 2
Marquis: Flash of purple to black, purple around edges
Mandelin: Straight to black
Mecke: Flash of green to black, green around edges (the green edges could possibly just be traces of leftover reagent)
Simons A: No reaction
Simons B: Bright blue