(edit: slight difference is that Nerchio had studied his opponent's opening and specifically countered it. OP is blindly countering "current metagame trends".)
On topic: I'm having a lot of fun (and success) doing a 2 rax (ractor -> tech -> concussive) push in TvP. It abuses that protoss usually think I'm doing some sort of tech (banshee or other 1-1-1 variant) if they scout or just assume I'm doing 1 rax no gas fe. Very few protoss are ready for it and usually lose their expo or the game.