I just got a chance to get mine out of the POB.
They are pretty nice. Lots of detail on the underside and the floors of the cars are stunning! TWX did a super job designing and assembling these cars. The height looks pretty close for the G11's, not quite enough rivets on the ribs and none under the top bracing along the top of the car, but they are close enough for a G11 for me. Now to find some decals for N&W and some coke loads.
Bob