Oh sure. Corner me with that question. LOL.
If the recent concept image is enough reference material to create a working model and that's what someone sold I'd be happy.
I can't take a set of calipers to screen caps to verify exact proportions.
Look at how many variations of the Blade Runner gun have been made. Most of them have minute details that differentiate them but they're all fantastic replicas given the limited amount of source material.
Not trying to rush anyone (not that I have enough influence to do this anyway) but if you made one from that concept image I seriously doubt I'd be able to tell the difference.
In short... I think this pistol is so awesome I can't wait to lay hands on it.