MeshPack - Plugin for automatic instancing of meshes

Let me make sure I got this right.
If I activate the plugin, I don’t need to think about instancing at all — the plugin automatically kicks in during packaging, finds duplicate meshes, and replaces them with proper instances?
That sounds amazing! I already bought it and I’m trying to fully grasp how powerful it is.

But just to confirm — it doesn’t work in PIE mode, right? Only during packaging?