The production version is in my grubby paws. I went with a wood burner, and it came out splendidly. I hope to get to work on finishing the model this week. Part of the beauty of these parts is that instead of spending months and years scratchbuilding something, The 3D printed conversions can be assembled in a week or two of evenings, getting you to the fun part of running it on your layout sooner.
Go Build Something Awesome.