Creating exceptions in SEPM 12.1.4

I am trying to work out the best way of implementing exceptions for the various products we have in our environment. Is it advisable to create a separate client group for each different server type and then apply a defined exception policy to that group?

e.g.

L My Company

   L Windows Servers x64 (apply General exceptions here)

      L Exchange (apply Exchange exceptions here)

      L Lync (apply Lync exceptions here)

      L SCOM (apply SCOM exceptions here)

Or should I put all the servers in the Windows Servers x64 client group and apply all the exceptions there?

Thanks, Kate