For Whovians with more knowledge than I...

Question for ficcage: has anyone on the show ever spoken Gallifreyan? I mean in the old series, because I don't think they have in the newer one, though we've seen it written. I have my own idea of what it would sound like but I don't want to write it and have people be like 'EPIC FAIL!'.

Thanks in advance, my wise f-list. :-)