Do GFCI protected devices need to be labeled as such, if they are protected from another location?
Outlets protected by an upline GFCI require a GFCI Protected marking.  Several stickers come with every GFCI device.  

You will never see a Code requirement for a GFCI receptacle.   You can satisfy all Code requirements with GFCI+breaker combo devices, or plain GFCI (deadfront) devices. 

Putting a GFCI+receptacle combo device on a circuit already GFCI protected is silly.  You are playing a "Yo Dawg" joke on yourself.  

Some very dull home inspectors will insist that nothing less than a GFCI receptacle will do, because he needs to see the TEST and RESET buttons.  However, that guy is right if there is no GFCI Protected sticker.