I've run a long train on my club's layout with this car in the consist and nobody caught it. Even our resident rivet counters... When pointed out, they laughed.
Sorry, no experience with Kinsman kits.
It's 100% convincing. I feel the same way about Weaver cars in O. Anyone who says they notice the low detail in a moving train - are full of it. It's when they are sitting that it "might" be noticable.