I'm currently using AgileZones to create zones around placed TCs. The zones use TruePVE RuleSets to allow vanilla PVP/damage within the TC zones.

To prevent camping on the edges of a zone, I'm trying to make it so when a player enters or leaves a TC zone, there is a delay before getting switched to PVE/PVP. DynamicPVP has this ability, but so far I haven't gotten it to work with AgileZones (only with manually predefined zones in Zone Manager). 

Is this something that's possible with TruePVE, and if not, does anyone have any idea how I can accomplish this with a zone using TruePVE RuleSets?

AgileZones would need to implement or fix that.