Yuo should probhably give the inspector a call on this one....... It is after all his/her call on this one. They might require one on each for the possible lot split. I however would use a 2-pack, or a main disconnect to gutter and 2 panels, and ground from the main, and a single riser. (Were you going to run 2 risers, one for each? The "high cost" of dual meter packs would be negated by not having to install two panels.)

shortcircuit, many local areas the AHJ may require more electrodes and bonding than the NEC requires. I too am required to hit two rods (or a ufa)and water and gas to the main, bond the water (Hot / cold). Its not NEC minimums, but it is a way of life. [Linked Image]

Mark Heller
"Well - I oughta....." -Jackie Gleason