Sheet Metal Nibbler / Good Brand?

Yeah, but I'm warned that one hiccup would leave the Grand Canyon across my dashboard. I did buy a set of tungsten carbide and diamond burr cutters for the Dremel-type tool. 3/32". The gizmo has a flex-shaft accessory so I wouldn't end up trying to support a pound and a half while the mechanism formulates evil designs on my intentions. I wish to use rectangular shape rocker switches rather than oogly toggle switches. Supposed to use chassis punches for the rocker switches but Greenlee punches are nightmare expensive and impossible to find.