After a few years of establishing a square foot garden my wife and I are interested in adding a traditionally laid out garden as we're running out of room with all the ornamentals. Perhaps I can't get square foot layouts out of my mind, but I was wondering if the spacing requirements between rows normally includes walking room or not. The space listed between rows is nearly always more than the space within rows. It seems like that would created a rectangular shape:

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But most vegetables (save for vining ones) are more round shaped.

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And is it ok to plant smaller vegetables back to back

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Or should there always be a path between plants?

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(B = bean plant; r = empty row)