Hello lurker man, and welcome to Linux =]

I don't really know how to do it yet (and I'm not currently on my computer) but If you try to do it from terminal it might work...

Look on to the output managing commands (eg grep), I remember that one of them show how many lines the output text has, that would be your total contacts, and with a filter to show only the online ones and the same command you can see the online only number =].

That's a rough workaround, if Kaivalagi sees this post soon (or someone else with more knowledge than me) they might be able to help you better.

Tell me if you get anything o/