What's happens when you open Galthen's satchel?

Question

I wonder what will happen when I open it Galthen' Satchel? Does it disappear and all we are left with is the Artefact box? I would like to have both and I wonder if I will miss the chance on one of them. 

Answer 1

You'll have both of them permanently. The Satchel acts as a backpack and you get to keep both of them even after the quest is completed