One can get away with this… for a time. Eventually something will go wrong and the results will be worse using high speed wood tools instead of the tools actually designed to cut aluminum and other metals.
I do not know how anyone can justify trying to save a few bucks by not getting the right tools given the increased chances and severity of injury.
I might be prejudiced though - the only time-lost injuries I have ever suffered or witnessed in a shop was from using a wood chop saw (with a metal blade) to cut aluminum and a wood table saw (with a general purposed blade) to cut polycarbonate.
Edit: to be actually helpful instead of just pissy about using the right tools - here is a list of highly rate metal cutting saws to replace their woodworking equivalents.
I and 95 have the DeWalt cold-cut mitre saw and love it, I know many teams have the Evolution RAGE saws and love them. 95 also has a Milwaukee portaband (like the DeWalt portaband listed) and we really like it. I have never used the circular saws listed there, but they strike me as a great replacement for table-saw-cutting of metals because they run at lower speeds and allow you to clamp down the metal your cutting instead of trying to hold onto a sheet metal when it catches a saw blade!