When you are your own person and then become sworn to a legitimate king, you get to choose your banner (coat of arms).
You need renown of 160+ to get offers as a male, as a female they never give offers but from around 350 they accept you if you ask them first - but without a fief (land). They let you keep what you take in either case -- MOST of the time that is.
When you become your own king, which shouldn't happen too soon, you generally were already with a banner and have been ion some kings service for some time.
As for .71, I expect a new version to be up tomorrow. Small chance, today but work looks to be busy, as a co-worker wants to make trouble for me today.
But that's mostly jealousy. So I will have to babysit for a while for office politics. Makes the infighting in Perisno seem tame