The items it makes has to be out of a material, pcb, resin soaked powders, heated steel powders in wax forms etc. This uses pcb plastic the same as Maker-Bot and others, heated up and take new form. By hand you'll never be able to get the 1mm level of control like a 3 axis machine will, but this would be great for on the fly fabrication at a meeting etc.
One of these could be really handy for making custom fittings for all kinds of stuff. No, it'll never have the accuracy of a 3D printer. But they'll work great for jerry-rigging things.
as an avid 40k player i am really interested in this just even as a way to add custom graphical touches to models. heck if you make have a steady enough hand and are a good enough drawer you could make some basic figures with this .