I believe that the water resistance is just a gimmick to be honest. My elites have all been less than impressive at repelling water and I haven't really put much stock in that feature. Nike supply blank jerseys which will sit around waiting for that custom order. Then the seamstress will collect the twill and and apply it. In the factory the twill is applied by machine. I think like any coating the water repellant wears down over time and becomes less noticeable and it wouldn't surprise me if they have actually stopped doing it anyway.
Jersey look great though.