I've been running dhewg's branch for a few days with no issues. I get the same sync speeds as my w8980 with fb-7490 DSL firmware. Running as a full bridge (dsl0-eth0) so can't post DSL stats, only what I can see from the ISP side.
DSL Mode
VDSL2
Estimated Distance to Node
318m
Physical Profile
100/40 Standard 6dB
Attainable Rate
142.5 Mbps
50.4 Mbps
Attenuation Average
N/A dB dB
2.5 dB dB
Current Sync Rate
107.7 Mbps
44.2 Mbps
Loop Attenuation Average
N/A dB dB
2.5 dB dB
Noise Margin Average
17.2 dB dB
11.3 dB dB
Shame about the licences holding this back. Could it be merged without the files and have a BYO situation?