There was no mention of what type of blades it uses and how you change the blade....the changing the blade could be awkward....I can see the screw inside...just wondering. This tool would be good for the slot rulers and ruler use, however curves and fussy cutting would be a problem since you can't see where you are cutting....strictly for rulers.
I can see that people with arthritis could benefit from it, but they too, would have to know that no pets or grandchildren will be around when it is in sight.