Yes the type cover 2 or touch cover 2 work on the surface RT. I have a surface 2 with a "old" touch cover so the other way around also works (see also the spec of the keyboards)
https://forums.windowscentral.com/e?...token=nmyWhATl Tech. Specs.
•Lightweight, 2.75mm thin pressure-sensitive keyboard
•Backlit, proximity-sensing keys
•MAGNETICALLY ATTACHES TO ALL SURFACE TABLETS
•Spill-resistant, easy to clean
•Windows shortcut keys and touchpad for easy navigation
•Supports touch gestures across keys and the touchpad