As a professional carpet fitter this tool has been amazing, I use the multi tool approx 20-30 times a day. Within the business I do we also do deliveries of furniture including beds etc and having this strapped to your hip ready to cut open bedding bags, cardboard packing etc is perfect.
Believe it or not I have even fitted a bit of domestic vinyl with the knife attachment, due to leaving my fitting knife at another job and it did it perfectly..
I would recommend purchasing the gerber sharpener too, to keep the blade as sharp as possible.
The only slight fault I think with the knife is the cross head screwdriver attachment, the blades are too small to be able to turn anything with any force.