Managing multiple farms from a single AMC

Using the Citrix Access Management Console it is possible to manage multiple XenApp farms without having multiple consoles open. As the AMC uses integrated authentication (there is no login prompt when launching the console) there is a mandatory requirement to manage multiple farms, our Admin user must be an administrator on all the farms we are going to manage. This is easy to setup if the farms are part of the same domain or it's also possible with the proper trust relationships and group nesting if they are distributed accros different domains.
Once this requirement is met, all we have to do is to configure the discovery process on the AMC adding one server from each farm. After the discovery is complete, each farm will be displayed under the Presentation Server node.
A downside for this config is that the discovery will take longer than what it takes opening the AMC for each individual farm but it's an option to keep in mind if we prefer using less admin tools.