Back when I was in college, I used to work for the K-Mart warehouse. It was my job to fill the orders that specific stores sent us. This meant that I got pretty handy with a box cutter. However, I have a difficult time with the hand tape dispensers. To this day, I still tape up the box then use a box cutter to slash the tape from the roll. We use those types of tape dispensers in the shipping department at my current job. Luckily, I don't have to use them very often. It's probably not particularly safe to cut tape with box cutters.