Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
In this particular case I would select to shield the voltage more than the current. But, why not shield them both?
Also, from the naming convention they seem to be static signals and you should therefore shield them at places where they cross HF wires or other AC wires/nodes. As such, due to their static nature, you do not have to consider any impedance matching (i.e., full ground shield).