FYI You can still order a vinyl interior, ie. new style trucks,as well asALL previous truck series.The colour is Titanium ( light gray) If you order the top of the line truck with leather,the rear seats are vinyl.
You were right about no vinyl w/ power windows. If you want vinyl seats with the power window options, just order one with leather!
The vinyl actually looks like the leather with the same pattern and stitching.
The reason you do not see vinyl is simply supply and demand, almost nobody is asking for it anymore.