They might actually pull this off. Good for them.
I received the invite yesterday, and I took a look at it. And it actually works pretty well for the basic install and library functions even in beta stage. It has cool boxarts, not the stupid GOG library boxarts, which is an additional plus. Then I deleted it because I realised that I only use one client, the Steam one. But if someone wants to integrate all of their libraries, it's pretty cool.