I would love to see a scale Metroliner and a Silver liner in PRR markings, I seen them everyday when they ran from 30th street station.
I remember MTH doing a railking version but cancelled it from lack of orders. I thought the painting/drawing made it look horrible that is one reason I did not order it.
I believe both versions would only look good in a true scale version including the different models.
I am a little hesitant in buying a resin casting of them, I worked with resins many time and have yet to find one that would be hardy enough to stand up to three rail running, they are also very easy to warp from heat. I know beggars can't be choosey but I thinks I would pass on the resin one.MHO