I live in an area where cable/fiber is not an option, and have been using T-Mobile Home Internet for a while now.
People in other locations will surely have different experiences, but for me it just works okay and the signal is poor. In rainy weather, it degrades even worse. Even with a Cel-Fi booster and directional antenna, the signal is worse than AT&T without any booster. While I sometimes get 50 Mbps down, usually going over 20 Mbps gets a bunch of latency and packet loss.
For backup, I have an AT&T hotspot, which performs much better but is limited to 100GB. I get 120 Mbps down on this with no degradation.