I used a utility knife in the building trades for about 45 years, and I have one hanging on the board in my work room. But I doubt it's been off the peg since I hung it up 8-9 years ago. The only thing I use is a round knife. The utility knife totally obstructs my view of what I'm cutting, Xacto knives are too flimsy, and neither of them come sharp enough for my tastes. If I have to stop and polish them, I might as well strop my round knife. I do use the rotary cutters on chrome tan, both straight and scalloped.