I don’t know if this will work or not now that I see it only requires 3.6 volts. I have used a few different Trust fire drivers and had no problems with them running MT-G2’s However they were drivers for multiple emitters. My guess is that it will work as long as you have multiple cells. What I’m not sure is if it will work as a boost driver and have enough power to drive a 6volt emitter. If it tries to work as a boost driver it might fry the transistor.
You will probably have to try it to find out. I have the driver you are talking about but it’s running a single XM-L2 and I don’t want to pull it apart because it was a real pain in the back side trying to get it to fit correctly. I don’t know if anyone has tried this driver with an MT-G2.
Here is a thread that has a lot of information on lot of drivers that have been tried with MT-G2’s.
Good luck.