Siemens rail is made from aluminum and I do have a couple compound miter saws that that works perfect on them
I stopped using aluminum rail because it can not be used to run a ground through it, and my 'habit' is to use ground terminals instead of DIN anchors.
I did see a promotion a few years back that one company was giving away a DIN rail shear free with every order of 5,000 steel rails. That would be nice, but a 125 year supply of rails for me.