I integrated this into my client's application when it was still in beta. Even in beta I was happy with it, and now it is far more robust.
It has allowed us to track down edge case bugs with nearly no back-and-forth communication with the client.
Most importantly, it has let us reach a level of proactive development for our clients' live applications that gives them the peace of mind that their applications are monitored and being fixed without needed to request it.
Great way for our clients to gather feedback on their apps in beta and production!