markc has hosted a few but if there aren't enough working machines on the floor, then it is difficult to host one. Last time I dragged my Cactus Jack's along and other people brought along a machine or two as well to fill out the experience.
There is no reason we can't have one in Melbourne, just need someone to put their hand up to host it...
We had talked about mini-meets for those of us with less machines but I need to fix mine up before that will happen. I tend to desert the shed in winter.