People have had some *really* inconsistent results in unlocking them. Some people have had all three pieces unlock after getting one mk12 piece of the standard set, some have had to get all three pieces (and re-acquire pieces they already had), and some people had them already unlocked with or without already having mk12 pieces from the old system.
Now, the doffs are a bit more consistent, they're just plain broken.
The sets, though? All over the place. My Klingon had the ground set unlocked right away and got the space set after buying a shield. My fed player had the space set unlocked right away and has bought two pieces of the standard ground set without unlocking the adapted ground set.