Most rotary cutters can be used with either hand, though none of the ergonomic cutters can be. Look at the pictures of where the For those of us who have issues with our hands, the ability to switch hands is as important as ergonomics. I'd gladly have more than one rotary cutter if I could find a rotary cutter I can use with my left hand. A soft cushion handle helps, but it still puts the wrist in an awkward angle. Having had surgery on both wrists in the past, ergonomic is required. I'm mainly left handed, so left handed is required.