First of all, thanks a lot rainisto for your work and for posting it here.

I gave the touchstone wireless charging kit a try.
While idle the output voltage is about 5.64 V.
While charging this drops down to about 4.53 V.
I think this is due to the kit not being capable to deliver the needed current.
From past experiments with the N9, it seems that the touchstone kit is not that powerful.

Nevertheless, I gave it a try and charged for about 10% of the reported capacity.
It generally seems to work (despite of the relatively high drop of voltage from idle to charging).
However, the touchstone kit doesn't seem to be optimal for this.

I attached some photos of the internals and of the phone on the touchstone charger.
Personally, I quite like the "floating look" of the device when it is attached to the charger.

PS: During these experiments no Other Half was harmed.
The receiver is held in place by its own glue (After having it pulled out from a Palm cover.).
The connection "pads" are held in place with hot-glue that can be removed completely without causing any damage.
By the way, I created the "connection pads" by forming a bit of the wire to a flat circular shape and then used tin-solder to fix it.

PPS: Is there a way to monitor the charging voltage and current on the device (e.g., via sysfs, proc, or something)?