I'm assuming the strength of charging is dependent on how close the charging coil within the phone is to the charging coil behind the wall of the plastic holder, and that it is a square function - twice the distance is a drop of strength of four times, three times the distance is drop of strength of nine times - then it might not work very well at all.
The thickness of the faux leather material is measured to be 3.2mm. Not sure if that is a lot or a little compared the other distances.
I'm wondering if others have some experience with using these cases on the charger to learn how much of difference it is making.