The Pirobox module will support the Insert module.

But, for the support is expected a small collaboration with the Insert module.
As result of this cooperation, it is possible to use a better functionality for the grouping of images. Currently allows the Insert module only a rudimentary grouping of images. This is in contradiction to what provides the Pirobox module using the core functionality of the Image module.

For more informations about the small collaboration see my issue on the Insert module: Patches that allow to extend the functionality for more usability