The planking on that model is probably the way it is because he planned to copper it, consequently, the run of the planks was not important.
And teh point is not the run of the planks. That is independent of construction method. This way of bulding the model would work also if the planks was as they was done in the actual ship (except, of course, the planks could not enter the rabbet witht his construction, since there are no rabbet).
(This is used on a lot of kits, but I had to search many logs before actually finding one which showed how it is done, most logs only show it in profile. I did not bother to find one which also showed historical planks, as the planks is not what we are discussing.)