Yes, I have seen an almac. Unfortunately, I get over to the land of the long white cloud occasionally.
I think where it is difficult for replica builders is that whilst it is easy to scale a body up from photos etc., it is difficult to get a photo of an original cob from directly above. ie. plan view. The shape ( looking from above) of the front and rear is really what makes an original " stand out ". leastwise to me.
Also very difficult to imitate the vertical curves of the side panels between the front and rear wheel openings. Some replicas are almost flat in these areas.
It is these subtle differences which make a huge difference to the " persona" of a cobra.