Diff pair to diff pair spacing based on their vias?

For forever and a day I've been able to manage pair-to-pair spacings without any effort. Allegro conveniently stores the primary gap spacing with the physical rules, so this has always been a breeze. But now, I'm being asked to base my pair-to-pair spacings on their vias instead.

Is there an easier approach to this other than putting each diff pair into their own net class? No matter how I slice it and dice it, It seems that a "DPr"object will pass on its rules to its individual nets.

Thanks

Eric