patcher - click the edit button to see its contents.
yes, this example has the table defined in the main patch and then is used in the sub patche.
personally, I think that makes more sense, having the parent owning the data, rather than delving into a subpatches innards. (this is 'normal' from a programmers perspective)
of course, its only the table definition required in the parent... you can read and write to it, from within the subpatch, or even from different subpatches.
EDIT: fyi, i tested with a subpatch (as opposed to the patchers embedded subpatch) and that also works (as expected )