Haven't used the Evolution but use the 14 inch Milwaukee extensively. They cut great! Best on steel thicker than 1/4". One of the videos shows a guy with short sleeves and safety glasses. NEVER use without a good welder's jacket and full face shield with safety glasses underneath! The chips are sharp, hot and supersonic! The chips are fairly easy to clean up with magnets but they'll cover your entire shop with just one cut. Plan on about 15 minutes clean up. They'll stick into your shoe soles so make sure you take a half-hour to dig 'em out or take off the shoes before you go home and hit the Boss' hardwood floors.
The blades are expensive and the blade teeth are very sensitive to impact. Just cutting through a piece of grating or expanded metal can break a tooth as the blade breaks through and jumps to the next wire. Once a tooth is broken, the rest go like dominoes. We probably ruined $700 worth of blades before we learned how to gently start every cut. We still screw up occasionally. One slip and $100- $175 gone! If you're really careful, they'll make quite a few cuts but we've never gotten near 1,000 cuts out of any brand blade. We've had some success brazing on a replacement tooth taken from another blade. That takes so long we only do that on a near new blade.
In summary, they likely cut smoother and faster than anything you've ever used. The saws are expensive to buy and the blade cost is high. Clean up is a bit of a hassle and shouldn't be put off as the chips embed themselves in shoes and clothes and will end up all over your car and your house. We arrange everything we want to cut with this saw so we can cut it all in "one sitting" then clean up and move on.
I find it hard to believe to be able to cut like the ad shows, to cut through metal the blade needs to have as fine of teeth can get, although Lately I was surprised while installing some Ipe decking wood, that I was told to use a 16 tooth carbide blade for best cutting, and sure enough it cut very smoothly with minimal splintering
