I gave up on that too. Possibly an oversight by the developer, like the 2 "mind reads" that lead to 2 coin purses; they're both empty, all the time! Good thing I quick save before EVERY mind read
I believe that is solved in the patch. I haven't tried it myself yet due to the showstopper bugs, but apparently its supposed to fix the empty bags of loot you can mindread for.
So far I see the EMPTY coin purses are still empty (playing DKS on Xbox) after mindreading ... unfortunately ...
On 7th of february 2015 : I start a new adventure in the Divinity world of Original Sin, it's a Fantastic Freaking Fabulous Funny ... it's my All Time Favorite One !