You've got a point there, but your way won't work either.
Only one word per status is allowed now.
Default is just all statuses. (I don't think I'm going to make an option to change that, if you use it a lot, just add a quicktext?
There are indeed more statuses allowed per xwhois, by simply doing something like this:
/xwhois group:friends status
nline,busy,brb
Or by making more status: statements:
/xwhois group:friends status
nline status:busy status:brb
You could also specify more groups:
/xwhois group:friends,family
/xwhois group:friends group:family
A little note on the masks:
I have declared $name$, $email$, $status$ and $group$, should I make more?
I made the order customisable because I normally look again at a command and see I've forgotten something. I never want to raise my whole arm to grab my mouse again, so I have to scroll through it with my keyboard, which really sucks on long commands. With this syntax, you could just add it in the end.