I have figured out how to get both synthetic and summary formatters attached to a given datatype.
I call GetChildAtIndex from the summary which returns the synthetic child. (and GetNonSyntheticValue has no effect - to which I must ask - why bother having it then?)
Given these 2 bugs:
I cannot figure out how to have a data item present in the summary that is NOT present in the synthetic. (I don’t like the fact that the data is repeated twice - wastes screen real estate - and with larger data structures and the Xcode UI on a 15" screen - it matters. ;<