Possible to have Backpacks only drop in PVP Zone Manager Dynamic PVP Zones?

Is it possible to have Backpacks only drop in PVP Zone Manager DynamicPVP Zones? The rest of my map is PVE, in the PVE Zones I'd like players to keep their backpacks on death but in the PVP Zones using Zone Manager I'd like players tro drop their backpacks.

Is this possible?

Most things are possible, but this is would be easier for the Backpack plugin to handle.