I'm not by any means in fringe coverage. I live and work within the same cell site (the entire cell site covers about 10 square miles), which includes five LTE+eHRPD towers. I have not left 4G coverage since the MR2 was successfully deployed. Yes, the two did coincide lol.
Aside, I was pulling 25 Mbps on the MR2 radio with no loss of data service. The only things I did not care for was the speed at which it took the data to connect when booting up in fast boot.
Now, on the 2.10 build, I'm pulling 6-8 Mbps, and I frequently lose all data connection. No 2G, no 3G, no 4G. I and another one of my team members with a similar issue with his Thunderbolt on the 2.10 build have been submitting connection data to my team on the outside chance that we end up deploying this radio with the official OTA update, as I foresee my workload increasing dramatically, and we want to be ahead of the issue.
I really hope the R&T department does not push that radio in the update, but sadly that department honestly does not really listen to us until there is a major problem like the MR1. Yes, we root and flash leaked software to stay ahead of our own coworkers lol.