Ok....let me know what happens. I have a HS850, so it's good to know that it will work with the 7100g. :D
Also, I thought I would mention that Motorola makes a nice little connector you may want to purchase:
Charger Adapter CH706 - SKN6185A
This allows you to charge your headset from the same mini-USB connector you charge your Blackberry from. You can also charge both the phone and the headset at the same time using only the single Blackberry charger. The only thing is they recommend against using this connector when you are charging from the USB port of your computer. This means one less charger to bring along when you travel.
(of course they do not make this for Blackberry specifically, but for the Razr which also uses a mini-USB connector)