we have been testing our GSM drone connection module in the field and it performed really well. Here is a short video showing how you can upload a mission and send a drone out completely over cellular network. It's telemetry and path are then available in real-time at our free online platform www.globalarc.us
This opens up the potential for a completely autonomous system (that we are working on as we speak, stay tuned), but also allows centralized command for any commercial application. Our GSM companion that has a 2" touchscreen weighs 1 Oz without the battery and 1.5 Oz with an independent battery. It works with APM and Pixhawk for now and we will announce the availability here very soon.
Please let us know your thoughts!