Correct. I researched the NF model to death around the time I got mine, and I've seen gens with different clasps.
As far as flaws go, there were two rep versions of this model, and I ended up going with the less accurate but higher quality version from River. In all, I noticed around 8 differences between River's model and the gen. But I'm still really happy with it.
I've got a solid caseback and more accurate dial and hands on the way (seem to be waiting forever for them though) for my project.