Every time I see a Protoss do this, he just gets massively stomped by the opponent Zerg at the current top Korean level.
Maybe it's the map pool or the top Zergs like hero & ZerO knowing how to deal with it. but Sair/Reaver is becoming the SK Terran of Protoss builds (Zergs are exploiting the weakness of the build too well that it seems too sub-optimal and gimmicky).
It's funny how 4 Gate/2Archon timing is super strong vs the now popular 4 base/6 hatch style, but instead, people still opt to go for Sair/Reaver time and time again.
Nal_rA must be crying ._.