>> "We have some custom field values that are relevant to system admins who look after the server but not to end users of our product. Can they get that information from the TurboFloat server without using up one of the floating licences to get it? And preferably without stopping the server running?"
Well, right now the TFS has to be stopped to read any of that information. We do plan on releasing a server management library that you can include with your own management app (and we'll also have a pre-written management app) that will let the customer manage the TFS while it's running.
It'll be released sometime in 2017, we haven't put it on our schedule yet.