In his youth he has sufficient uncertainty of position on Barrayar that I wouldn't be surprised if he was more the Bastard's. And I see his later life career as more belonging to the Father.

I see Mark, as much as he might think that the Bastard would claim him, being Son through and through.

(Silver: I think you might have some strong fellow feeling for the Mark & Kareen K storyline. Which is several books in to the Vorkosigan series.)