If the dial design is made up of Arabic hour markers, then I would prefer an eaten 6 versus a dot. It is more coherent for me. I find the dot out of place and a bit unnatural of the majority of hour markers are Arabic. An eaten 6 kinda feels as though there is more thought put into it — if you get what I mean. However when you get a combo ( 3,9,12 baton or da dauphine markers) then it gets a bit more debatable and boils down to personal preference. I still prefer the eaten 6, as I find the 12 hour marker corresponding to a dot a little unbalanced. The Shapiro photo you posted has a design that works extremely well, one that is ‘widely approved’ and people are familiar with. Without the 5,6,7 hour markers seems to be visually ok. Ultimately, it is really what aesthetics that resonate with you the most and if the design is coherent.