^^and above dogdog nailed it too. Why do they have to have infomercials to try to sell it? Milwaukee, Dewalt, IR.......they come out w new products too. But they hold media events and go to trade shows to push their wares. Be skeptical of anything on infomercials, and product concepts that have been around 15+ years but never picked up by reputable manufacturers.
The other big red flag??? Who was first to try to take it mainstream? Craftsman! That's right folks, from the company who also brought you RoboGrips, more than one attempt at a one-size-fits-all wrench, the newest Mach stuff and other infamous gimmicks.
Finally, I've run my own metalworking shop since '09 and never ONCE thought to myself, gee, a DualSaw would be perfect for this. If I can't do it w grinders (4.5" or 6", cordless, corded and air), electric shears, plasma, metal cutting circular (corded or cordless), lathe, mill, die grinders, oxy/acetylene, bandsaw (stationary or portaband).....chances are the DualSaw will not be a sudden panacea!!