Our PoCo (Entergy) actually requires parallel paths.
This is from their installation standards...
11.10 Meter Grounding
Grounding the metering installation is a safety consideration both for the
Company and the Customer. The grounding connection shall be made in
accordance with NEC Article 250 and any other referenced code and preferably
in the meter socket. If the grounding connection is made anywhere other than
the meter socket, the Customer shall be responsible for grounding continuity
between the point where the grounding is made and the meter socket.
[This message has been edited by txsparky (edited 12-09-2003).]