I agree that this rule does not make much sense. If they permit two disconnects and permit parallel cables what's the difference? Can you mount a 12 x 12 gutter above or below you 200 amp disconnects? If so run a set of 600's into the gutter and then tap off with 3/0's to each disconnect. Another way would be to have a single panel built with two 200 amp disconnects.
Jacuzzi Guy - You connected 3 wires in each split bolt? Where did you find split bolts rated for 3 wires?