I always carry it, its a folder that uses box cutter blades, I have personal issues against standard pocket knives especially those with half serrated blades.
Don't care for serrated blades as they're such a pain to sharpen but a good knife can be used as a wedge, a pry bar, and a screw driver in a pinch. The box cutter is much more limited as it's really just a sharp edge, a good sharp edge yes, but just a sharp edge.
Or you could just carry a knife. But I get it whatever your personal reasons are you have found a reasonable alternative that while maybe not as handy is just as efficient.
Considering I was stabbed by a regular knife, in a very unpleasant fight with a miserable excuse for a woman for no reason other than the fact that I wanted to go for a walk, regular knives are not my go to tool unless I feel like have a panic attack, (which is never since they suck!)
https://www.amazon.com/Nite-Ize-DoohicKey-Stainless-Carabiner/dp/B00FIX126K/ref=mp_s_a_1_2?ie=UTF8&qid=1539094143&sr=8-2&pi=AC_SX236_SY340_QL65&keywords=keychain+multitool+ruler&dpPl=1&dpID=31wGY3ItpdL&ref=plSrch