I did several tests with it without problem, but the day of the real live event, it stopped streaming to YouTube after 42 minutes, leaving our guests hanging, although it kept recording in their servers (so it wasn't a problem with the connection, or it would have recorded on their servers). I asked their support about the issue and, after several messages in several days, I'm still waiting for an explanation and a fix more than 2 weeks later.

During the streaming event, although I have a new computer with the latest processor, 16Gb of RAM and a powerful NVidia GPU, the UI was quite lagging, noticing the slow animations form time to time. And the layouts and personalization are quite limited at the moment.

The AppSumo offer limitation of not being able to share a custom video is quite limiting for using your own entrance and goodbye videos. I resort to using OBS as a Virtual Webcam and be very careful. It's a bummer.

On the bright side, it's a good replacement for Streamyard and the like, and its a promising tool. If you buy it as a leap of faith in the future, when they have everything sorted out, then go ahead.