My impressions on Gaterons:
Blacks: feel fantastic stock, slightly lighter than mx black and way smoother, with spring+lube should feel amazing.
Browns : Hardly better than mx poop, I'd say tactility is about the same but I didn't feel the "sandy/scratchy" feeling you get around activation point on mx brown so not sure is better.
Clears: Way too light, they felt even smotther than black but I couldn't tell if it was due to their spring weight or if they are different.
Reds&Blues: I had very few interest in those and they felt almost similar to Cherries.
I really hope that we can take Zeal Seal of approval about the quality of those seriously, because those Gateron linears are really dope.