I think it's pretty well known that poly is WAY more durable than nitro. I don't think there is a way to play a bass that has a poly coat enough to make it look that "road worn." You may get some checking if you leave it out in the cold and bring it where it's warm over and over, but you just won't be able to wear through the finish.
I remember sanding through the finish on one of my first MIM basses. It took FOREVER to get down to the wood with SANDPAPER. I suppose if you started playing right now without stopping, you may be able to get through to the wood within the next 2 decades.
+1000
That's what I was trying to say before! But the "Relic Haters" seem to disregard this as a reality and think that you can play any bass for 30 years and make it look like Jaco's BOD.

