I don't like plastic very much. What I like with 1/6 scale figures is having a lot of different textures, that can emulate the reality. Fabric, leather, real hair when possible, metal... Otherwise I would buy a plastic/resin statue.
Two very good points have been remarked:
Hodonitoo "At normal viewing distances in 1/6th scale all those intricate details are lost anyway"
And Bravomite "I would prefer fabric so it is more like the actual outfit otherwise the difference in texture will make it appear toy like"
The fabric prototype you show in your picture looks very good to me.