I have tested out the switches in person (thanks to Zeal!), and I can confirm that these are the real deal, we had vintage blacks to compare to, and the clear (linear) Gateron was better in all aspects: smoother, slicker, tighter switch top, tighter PCB mount when compared to Cherry MX.
Only potential issue I see is that: they are untested for durability, perhaps the smoothness felt in the switches might be attributed to lower durability, and the wearing away of the slider... we won't know unless someone uses it for a year or two and reports back.
tl;dr: It is solid as can be.
Gaterons are going to be the next big thing on GH.