I have a Touchstone on my desk an in my car. Nothing like being able to get into the car and just plop my phone down on the charger, where it's held magnetically, and let it charge. When I switch to WP8 in March, or earlier if I can get VZW to do it, having the ability to wirelessly charge is going to be one of the draws for me. I'd really like to see someone attempt to swap out the wireless components from a Touchstone back and a Nokia back to see if it will work on a Touchstone. The magnetic gripping is definitely a great thing to have. There have been quite a few people who have modified their Android phone backs to do this with success.
Wireless charging is just so much better than having to plug a cord. Plus it saves wear and tear on the phone's USB connector.