We have tested it using real BTC, so far so good! LND is definitely still in beta, and the Lightning Network itself is still in its infancy, so it's a good idea

We have tested it using real BTC, so far so good! LND is definitely still in beta, and the Lightning Network itself is still in its infancy, so it's a good idea not to have too much funds in an LND wallet. We're try to be very careful when developing Agora, and all features are covered by unit and integration tests. However, bugs are always a possibility.