I'm curious where this fits in with my Vagrant/chef workflow where I load a virtual environment with vagrant and provision both development environments and pro

I'm curious where this fits in with my Vagrant/chef workflow where I load a virtual environment with vagrant and provision both development environments and production environments with chef. Seems as though there's some overlap between how I provision environments and where this tool fits in. What would be the advantages moving this away from my provisioning tool and towards Packer?